MIDAMERICAN ENERGY COMPANY has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN
| Measure | Date | Value |
|---|
| 2022: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2022 401k membership |
|---|
| Market value of plan assets | 2022-12-31 | 703,857,206 |
| Acturial value of plan assets | 2022-12-31 | 683,432,650 |
| Funding target for retired participants and beneficiaries receiving payment | 2022-12-31 | 270,176,720 |
| Number of terminated vested participants | 2022-12-31 | 519 |
| Fundng target for terminated vested participants | 2022-12-31 | 20,566,653 |
| Active participant vested funding target | 2022-12-31 | 200,555,746 |
| Number of active participants | 2022-12-31 | 3,321 |
| Total funding liabilities for active participants | 2022-12-31 | 210,615,581 |
| Total participant count | 2022-12-31 | 6,026 |
| Total funding target for all participants | 2022-12-31 | 501,358,954 |
| Balance at beginning of prior year after applicable adjustments | 2022-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2022-12-31 | 138,635,770 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2022-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2022-12-31 | 0 |
| Amount remaining of carryover balance | 2022-12-31 | 0 |
| Amount remaining of prefunding balance | 2022-12-31 | 138,635,770 |
| Present value of excess contributions | 2022-12-31 | 0 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2022-12-31 | 0 |
| Total available prior years excess cotributions added at beginning of current plan year to add to prefunding balance | 2022-12-31 | 0 |
| Reductions in caryover balances due to elections or deemed elections | 2022-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2022-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2022-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2022-12-31 | 151,112,989 |
| Total employer contributions | 2022-12-31 | 0 |
| Total employee contributions | 2022-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2022-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2022-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2022-12-31 | 0 |
| Unpaid minimum required contributions for all prior years | 2022-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2022-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2022-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2022-12-31 | 14,844,112 |
| Net shortfall amortization installment of oustanding balance | 2022-12-31 | 0 |
| Waiver amortization installment | 2022-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2022-12-31 | 0 |
| Carryover balance elected to use to offset funding requirement | 2022-12-31 | 0 |
| Prefunding balance elected to use to offset funding requirement | 2022-12-31 | 0 |
| Additional cash requirement | 2022-12-31 | 0 |
| Contributions allocatedtoward minimum required contributions for current year | 2022-12-31 | 0 |
| Unpaid minimum required contributions for current year | 2022-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2022-12-31 | 0 |
| Total participants, beginning-of-year | 2022-01-01 | 5,999 |
| Total number of active participants reported on line 7a of the Form 5500 | 2022-01-01 | 3,002 |
| Number of retired or separated participants receiving benefits | 2022-01-01 | 1,755 |
| Number of other retired or separated participants entitled to future benefits | 2022-01-01 | 471 |
| Total of all active and inactive participants | 2022-01-01 | 5,228 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2022-01-01 | 448 |
| Total participants | 2022-01-01 | 5,676 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2022-01-01 | 18 |
| 2021: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2021 401k membership |
|---|
| Market value of plan assets | 2021-12-31 | 718,126,564 |
| Acturial value of plan assets | 2021-12-31 | 679,436,548 |
| Funding target for retired participants and beneficiaries receiving payment | 2021-12-31 | 266,917,216 |
| Number of terminated vested participants | 2021-12-31 | 519 |
| Fundng target for terminated vested participants | 2021-12-31 | 28,502,187 |
| Active participant vested funding target | 2021-12-31 | 209,474,627 |
| Number of active participants | 2021-12-31 | 3,571 |
| Total funding liabilities for active participants | 2021-12-31 | 219,298,227 |
| Total participant count | 2021-12-31 | 6,281 |
| Total funding target for all participants | 2021-12-31 | 514,717,630 |
| Balance at beginning of prior year after applicable adjustments | 2021-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2021-12-31 | 128,235,843 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2021-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2021-12-31 | 0 |
| Amount remaining of carryover balance | 2021-12-31 | 0 |
| Amount remaining of prefunding balance | 2021-12-31 | 128,235,843 |
| Present value of excess contributions | 2021-12-31 | 0 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2021-12-31 | 0 |
| Total available prior years excess cotributions added at beginning of current plan year to add to prefunding balance | 2021-12-31 | 0 |
| Reductions in caryover balances due to elections or deemed elections | 2021-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2021-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2021-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2021-12-31 | 138,635,770 |
| Total employer contributions | 2021-12-31 | 0 |
| Total employee contributions | 2021-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2021-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2021-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2021-12-31 | 0 |
| Unpaid minimum required contributions for all prior years | 2021-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2021-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2021-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2021-12-31 | 14,380,348 |
| Net shortfall amortization installment of oustanding balance | 2021-12-31 | 0 |
| Waiver amortization installment | 2021-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2021-12-31 | 0 |
| Carryover balance elected to use to offset funding requirement | 2021-12-31 | 0 |
| Prefunding balance elected to use to offset funding requirement | 2021-12-31 | 0 |
| Additional cash requirement | 2021-12-31 | 0 |
| Contributions allocatedtoward minimum required contributions for current year | 2021-12-31 | 0 |
| Unpaid minimum required contributions for current year | 2021-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2021-12-31 | 0 |
| Total participants, beginning-of-year | 2021-01-01 | 6,251 |
| Total number of active participants reported on line 7a of the Form 5500 | 2021-01-01 | 3,321 |
| Number of retired or separated participants receiving benefits | 2021-01-01 | 1,730 |
| Number of other retired or separated participants entitled to future benefits | 2021-01-01 | 501 |
| Total of all active and inactive participants | 2021-01-01 | 5,552 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2021-01-01 | 447 |
| Total participants | 2021-01-01 | 5,999 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2021-01-01 | 7 |
| 2020: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2020 401k membership |
|---|
| Market value of plan assets | 2020-12-31 | 716,843,876 |
| Acturial value of plan assets | 2020-12-31 | 686,963,986 |
| Funding target for retired participants and beneficiaries receiving payment | 2020-12-31 | 267,767,902 |
| Number of terminated vested participants | 2020-12-31 | 559 |
| Fundng target for terminated vested participants | 2020-12-31 | 28,553,077 |
| Active participant vested funding target | 2020-12-31 | 243,894,315 |
| Number of active participants | 2020-12-31 | 2,115 |
| Total funding liabilities for active participants | 2020-12-31 | 247,896,892 |
| Total participant count | 2020-12-31 | 4,852 |
| Total funding target for all participants | 2020-12-31 | 544,217,871 |
| Balance at beginning of prior year after applicable adjustments | 2020-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2020-12-31 | 110,924,219 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2020-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2020-12-31 | 4,096,626 |
| Amount remaining of carryover balance | 2020-12-31 | 0 |
| Amount remaining of prefunding balance | 2020-12-31 | 106,827,593 |
| Present value of excess contributions | 2020-12-31 | 0 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2020-12-31 | 0 |
| Reductions in caryover balances due to elections or deemed elections | 2020-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2020-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2020-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2020-12-31 | 128,235,843 |
| Total employer contributions | 2020-12-31 | 0 |
| Total employee contributions | 2020-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2020-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2020-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2020-12-31 | 0 |
| Unpaid minimum required contributions for all prior years | 2020-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2020-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2020-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2020-12-31 | 5,669,954 |
| Net shortfall amortization installment of oustanding balance | 2020-12-31 | 0 |
| Waiver amortization installment | 2020-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2020-12-31 | 0 |
| Additional cash requirement | 2020-12-31 | 0 |
| Contributions allocatedtoward minimum required contributions for current year | 2020-12-31 | 0 |
| Unpaid minimum required contributions for current year | 2020-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2020-12-31 | 0 |
| Total participants, beginning-of-year | 2020-01-01 | 4,822 |
| Total number of active participants reported on line 7a of the Form 5500 | 2020-01-01 | 3,571 |
| Number of retired or separated participants receiving benefits | 2020-01-01 | 1,728 |
| Number of other retired or separated participants entitled to future benefits | 2020-01-01 | 500 |
| Total of all active and inactive participants | 2020-01-01 | 5,799 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2020-01-01 | 452 |
| Total participants | 2020-01-01 | 6,251 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2020-01-01 | 1 |
| 2019: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2019 401k membership |
|---|
| Market value of plan assets | 2019-12-31 | 644,428,796 |
| Acturial value of plan assets | 2019-12-31 | 675,292,739 |
| Funding target for retired participants and beneficiaries receiving payment | 2019-12-31 | 253,032,951 |
| Number of terminated vested participants | 2019-12-31 | 594 |
| Fundng target for terminated vested participants | 2019-12-31 | 27,802,660 |
| Active participant vested funding target | 2019-12-31 | 275,800,052 |
| Number of active participants | 2019-12-31 | 2,330 |
| Total funding liabilities for active participants | 2019-12-31 | 280,070,208 |
| Total participant count | 2019-12-31 | 5,079 |
| Total funding target for all participants | 2019-12-31 | 560,905,819 |
| Balance at beginning of prior year after applicable adjustments | 2019-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2019-12-31 | 117,097,852 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2019-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2019-12-31 | 0 |
| Amount remaining of carryover balance | 2019-12-31 | 0 |
| Amount remaining of prefunding balance | 2019-12-31 | 117,097,852 |
| Present value of excess contributions | 2019-12-31 | 30,824 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2019-12-31 | 32,553 |
| Total available prior years excess cotributions added at beginning of current plan year to add to prefunding balance | 2019-12-31 | 32,553 |
| Reductions in caryover balances due to elections or deemed elections | 2019-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2019-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2019-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2019-12-31 | 110,924,219 |
| Total employer contributions | 2019-12-31 | 30,465 |
| Total employee contributions | 2019-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2019-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2019-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2019-12-31 | 29,677 |
| Unpaid minimum required contributions for all prior years | 2019-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2019-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2019-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2019-12-31 | 7,589,004 |
| Net shortfall amortization installment of oustanding balance | 2019-12-31 | 0 |
| Waiver amortization installment | 2019-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2019-12-31 | 4,126,303 |
| Carryover balance elected to use to offset funding requirement | 2019-12-31 | 0 |
| Prefunding balance elected to use to offset funding requirement | 2019-12-31 | 4,096,626 |
| Additional cash requirement | 2019-12-31 | 29,677 |
| Contributions allocatedtoward minimum required contributions for current year | 2019-12-31 | 29,677 |
| Unpaid minimum required contributions for current year | 2019-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2019-12-31 | 0 |
| Total participants, beginning-of-year | 2019-01-01 | 5,051 |
| Total number of active participants reported on line 7a of the Form 5500 | 2019-01-01 | 2,115 |
| Number of retired or separated participants receiving benefits | 2019-01-01 | 1,721 |
| Number of other retired or separated participants entitled to future benefits | 2019-01-01 | 542 |
| Total of all active and inactive participants | 2019-01-01 | 4,378 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2019-01-01 | 444 |
| Total participants | 2019-01-01 | 4,822 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2019-01-01 | 0 |
| 2018: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2018 401k membership |
|---|
| Market value of plan assets | 2018-12-31 | 744,987,376 |
| Acturial value of plan assets | 2018-12-31 | 691,436,331 |
| Funding target for retired participants and beneficiaries receiving payment | 2018-12-31 | 249,991,567 |
| Number of terminated vested participants | 2018-12-31 | 646 |
| Fundng target for terminated vested participants | 2018-12-31 | 30,121,680 |
| Active participant vested funding target | 2018-12-31 | 272,789,270 |
| Number of active participants | 2018-12-31 | 2,561 |
| Total funding liabilities for active participants | 2018-12-31 | 278,319,835 |
| Total participant count | 2018-12-31 | 5,349 |
| Total funding target for all participants | 2018-12-31 | 558,433,082 |
| Balance at beginning of prior year after applicable adjustments | 2018-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2018-12-31 | 99,575,251 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2018-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2018-12-31 | 0 |
| Amount remaining of carryover balance | 2018-12-31 | 0 |
| Amount remaining of prefunding balance | 2018-12-31 | 99,575,251 |
| Present value of excess contributions | 2018-12-31 | 30,128 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2018-12-31 | 31,875 |
| Total available prior years excess cotributions added at beginning of current plan year to add to prefunding balance | 2018-12-31 | 27,229 |
| Reductions in caryover balances due to elections or deemed elections | 2018-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2018-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2018-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2018-12-31 | 117,097,852 |
| Total employer contributions | 2018-12-31 | 31,652 |
| Total employee contributions | 2018-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2018-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2018-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2018-12-31 | 30,824 |
| Unpaid minimum required contributions for all prior years | 2018-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2018-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2018-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2018-12-31 | 10,398,992 |
| Net shortfall amortization installment of oustanding balance | 2018-12-31 | 0 |
| Waiver amortization installment | 2018-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2018-12-31 | 0 |
| Carryover balance elected to use to offset funding requirement | 2018-12-31 | 0 |
| Prefunding balance elected to use to offset funding requirement | 2018-12-31 | 0 |
| Additional cash requirement | 2018-12-31 | 0 |
| Contributions allocatedtoward minimum required contributions for current year | 2018-12-31 | 30,824 |
| Unpaid minimum required contributions for current year | 2018-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2018-12-31 | 0 |
| Total participants, beginning-of-year | 2018-01-01 | 5,321 |
| Total number of active participants reported on line 7a of the Form 5500 | 2018-01-01 | 2,330 |
| Number of retired or separated participants receiving benefits | 2018-01-01 | 1,704 |
| Number of other retired or separated participants entitled to future benefits | 2018-01-01 | 576 |
| Total of all active and inactive participants | 2018-01-01 | 4,610 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2018-01-01 | 441 |
| Total participants | 2018-01-01 | 5,051 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2018-01-01 | 0 |
| 2017: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2017 401k membership |
|---|
| Market value of plan assets | 2017-12-31 | 684,104,504 |
| Acturial value of plan assets | 2017-12-31 | 688,458,576 |
| Funding target for retired participants and beneficiaries receiving payment | 2017-12-31 | 230,851,422 |
| Number of terminated vested participants | 2017-12-31 | 689 |
| Fundng target for terminated vested participants | 2017-12-31 | 28,780,051 |
| Active participant vested funding target | 2017-12-31 | 279,513,826 |
| Number of active participants | 2017-12-31 | 2,783 |
| Total funding liabilities for active participants | 2017-12-31 | 285,934,815 |
| Total participant count | 2017-12-31 | 5,586 |
| Total funding target for all participants | 2017-12-31 | 545,566,288 |
| Balance at beginning of prior year after applicable adjustments | 2017-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2017-12-31 | 91,403,755 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2017-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2017-12-31 | 0 |
| Amount remaining of carryover balance | 2017-12-31 | 0 |
| Amount remaining of prefunding balance | 2017-12-31 | 91,403,755 |
| Present value of excess contributions | 2017-12-31 | 0 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2017-12-31 | 0 |
| Total available prior years excess cotributions added at beginning of current plan year to add to prefunding balance | 2017-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2017-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2017-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2017-12-31 | 99,575,251 |
| Total employer contributions | 2017-12-31 | 31,006 |
| Total employee contributions | 2017-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2017-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2017-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2017-12-31 | 30,128 |
| Unpaid minimum required contributions for all prior years | 2017-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2017-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2017-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2017-12-31 | 10,803,695 |
| Net shortfall amortization installment of oustanding balance | 2017-12-31 | 0 |
| Waiver amortization installment | 2017-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2017-12-31 | 0 |
| Carryover balance elected to use to offset funding requirement | 2017-12-31 | 0 |
| Prefunding balance elected to use to offset funding requirement | 2017-12-31 | 0 |
| Additional cash requirement | 2017-12-31 | 0 |
| Contributions allocatedtoward minimum required contributions for current year | 2017-12-31 | 30,128 |
| Unpaid minimum required contributions for current year | 2017-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2017-12-31 | 0 |
| Total participants, beginning-of-year | 2017-01-01 | 5,542 |
| Total number of active participants reported on line 7a of the Form 5500 | 2017-01-01 | 2,561 |
| Number of retired or separated participants receiving benefits | 2017-01-01 | 1,705 |
| Number of other retired or separated participants entitled to future benefits | 2017-01-01 | 627 |
| Total of all active and inactive participants | 2017-01-01 | 4,893 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2017-01-01 | 428 |
| Total participants | 2017-01-01 | 5,321 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2017-01-01 | 0 |
| 2016: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2016 401k membership |
|---|
| Market value of plan assets | 2016-12-31 | 678,011,406 |
| Acturial value of plan assets | 2016-12-31 | 705,365,645 |
| Funding target for retired participants and beneficiaries receiving payment | 2016-12-31 | 215,511,786 |
| Number of terminated vested participants | 2016-12-31 | 726 |
| Fundng target for terminated vested participants | 2016-12-31 | 28,026,652 |
| Active participant vested funding target | 2016-12-31 | 318,686,072 |
| Number of active participants | 2016-12-31 | 3,015 |
| Total funding liabilities for active participants | 2016-12-31 | 319,485,170 |
| Total participant count | 2016-12-31 | 5,804 |
| Total funding target for all participants | 2016-12-31 | 563,023,608 |
| Balance at beginning of prior year after applicable adjustments | 2016-12-31 | 0 |
| Prefunding balance at beginning of prior year after applicable adjustments | 2016-12-31 | 90,777,391 |
| Carryover balanced portion elected for use to offset prior years funding requirement | 2016-12-31 | 0 |
| Prefunding balanced used to offset prior years funding requirement | 2016-12-31 | 0 |
| Amount remaining of carryover balance | 2016-12-31 | 0 |
| Amount remaining of prefunding balance | 2016-12-31 | 90,777,391 |
| Present value of excess contributions | 2016-12-31 | 0 |
| Total available prior years excess cotributions available at beginning of current plan year to add to prefunding balance | 2016-12-31 | 0 |
| Total available prior years excess cotributions added at beginning of current plan year to add to prefunding balance | 2016-12-31 | 0 |
| Reductions in caryover balances due to elections or deemed elections | 2016-12-31 | 0 |
| Reductions in prefunding balances due to elections or deemed elections | 2016-12-31 | 0 |
| Balance of carryovers at beginning of current year | 2016-12-31 | 0 |
| Balance of prefunding at beginning of current year | 2016-12-31 | 91,403,755 |
| Total employer contributions | 2016-12-31 | 0 |
| Total employee contributions | 2016-12-31 | 0 |
| Contributions allocated toward unpaid minimum require contributions from prior years | 2016-12-31 | 0 |
| Contributions made to avoid restrictions adjusted to valuation date | 2016-12-31 | 0 |
| Contributions allocated toward minimum required contributions for current year adjusted to valuation date | 2016-12-31 | 0 |
| Unpaid minimum required contributions for all prior years | 2016-12-31 | 0 |
| iDiscounted employer contributions allocated toward unpaid minimum required contributions from prior years | 2016-12-31 | 0 |
| Remaining amount of unpaid minimum required contributions | 2016-12-31 | 0 |
| Minimum required contributions for current year target normal cost | 2016-12-31 | 10,987,969 |
| Net shortfall amortization installment of oustanding balance | 2016-12-31 | 0 |
| Waiver amortization installment | 2016-12-31 | 0 |
| Total funding amount beforereflecting carryover/prefunding balances | 2016-12-31 | 0 |
| Carryover balance elected to use to offset funding requirement | 2016-12-31 | 0 |
| Prefunding balance elected to use to offset funding requirement | 2016-12-31 | 0 |
| Additional cash requirement | 2016-12-31 | 0 |
| Contributions allocatedtoward minimum required contributions for current year | 2016-12-31 | 0 |
| Unpaid minimum required contributions for current year | 2016-12-31 | 0 |
| Unpaid minimum required contributions for all years | 2016-12-31 | 0 |
| Total participants, beginning-of-year | 2016-01-01 | 5,757 |
| Total number of active participants reported on line 7a of the Form 5500 | 2016-01-01 | 2,812 |
| Number of retired or separated participants receiving benefits | 2016-01-01 | 1,659 |
| Number of other retired or separated participants entitled to future benefits | 2016-01-01 | 644 |
| Total of all active and inactive participants | 2016-01-01 | 5,115 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2016-01-01 | 423 |
| Total participants | 2016-01-01 | 5,538 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2016-01-01 | 0 |
| 2015: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2015 401k membership |
|---|
| Total participants, beginning-of-year | 2015-01-01 | 5,993 |
| Total number of active participants reported on line 7a of the Form 5500 | 2015-01-01 | 3,015 |
| Number of retired or separated participants receiving benefits | 2015-01-01 | 1,599 |
| Number of other retired or separated participants entitled to future benefits | 2015-01-01 | 703 |
| Total of all active and inactive participants | 2015-01-01 | 5,317 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2015-01-01 | 440 |
| Total participants | 2015-01-01 | 5,757 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2015-01-01 | 0 |
| 2014: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2014 401k membership |
|---|
| Total participants, beginning-of-year | 2014-01-01 | 6,260 |
| Total number of active participants reported on line 7a of the Form 5500 | 2014-01-01 | 3,280 |
| Number of retired or separated participants receiving benefits | 2014-01-01 | 1,549 |
| Number of other retired or separated participants entitled to future benefits | 2014-01-01 | 744 |
| Total of all active and inactive participants | 2014-01-01 | 5,573 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2014-01-01 | 420 |
| Total participants | 2014-01-01 | 5,993 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2014-01-01 | 0 |
| 2013: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2013 401k membership |
|---|
| Total participants, beginning-of-year | 2013-01-01 | 6,558 |
| Total number of active participants reported on line 7a of the Form 5500 | 2013-01-01 | 3,531 |
| Number of retired or separated participants receiving benefits | 2013-01-01 | 1,508 |
| Number of other retired or separated participants entitled to future benefits | 2013-01-01 | 800 |
| Total of all active and inactive participants | 2013-01-01 | 5,839 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2013-01-01 | 421 |
| Total participants | 2013-01-01 | 6,260 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2013-01-01 | 0 |
| 2012: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2012 401k membership |
|---|
| Total participants, beginning-of-year | 2012-01-01 | 6,786 |
| Total number of active participants reported on line 7a of the Form 5500 | 2012-01-01 | 3,806 |
| Number of retired or separated participants receiving benefits | 2012-01-01 | 1,512 |
| Number of other retired or separated participants entitled to future benefits | 2012-01-01 | 832 |
| Total of all active and inactive participants | 2012-01-01 | 6,150 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2012-01-01 | 408 |
| Total participants | 2012-01-01 | 6,558 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2012-01-01 | 0 |
| 2011: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2011 401k membership |
|---|
| Total participants, beginning-of-year | 2011-01-01 | 7,032 |
| Total number of active participants reported on line 7a of the Form 5500 | 2011-01-01 | 4,060 |
| Number of retired or separated participants receiving benefits | 2011-01-01 | 1,462 |
| Number of other retired or separated participants entitled to future benefits | 2011-01-01 | 883 |
| Total of all active and inactive participants | 2011-01-01 | 6,405 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2011-01-01 | 381 |
| Total participants | 2011-01-01 | 6,786 |
| Number of participants with account balances | 2011-01-01 | 0 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2011-01-01 | 4 |
| 2009: MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2009 401k membership |
|---|
| Total participants, beginning-of-year | 2009-01-01 | 7,445 |
| Total number of active participants reported on line 7a of the Form 5500 | 2009-01-01 | 4,528 |
| Number of retired or separated participants receiving benefits | 2009-01-01 | 1,438 |
| Number of other retired or separated participants entitled to future benefits | 2009-01-01 | 880 |
| Total of all active and inactive participants | 2009-01-01 | 6,846 |
| Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits | 2009-01-01 | 363 |
| Total participants | 2009-01-01 | 7,209 |
| Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested | 2009-01-01 | 32 |
| Measure | Date | Value |
|---|
| 2022 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2022 401k financial data |
|---|
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $0 |
| Total income from all sources (including contributions) | 2022-12-31 | $-129,380,895 |
| Total loss/gain on sale of assets | 2022-12-31 | $0 |
| Total of all expenses incurred | 2022-12-31 | $84,042,640 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-12-31 | $83,631,323 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2022-12-31 | $0 |
| Value of total assets at end of year | 2022-12-31 | $490,129,749 |
| Value of total assets at beginning of year | 2022-12-31 | $703,553,284 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $411,317 |
| Total interest from all sources | 2022-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $0 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2022-12-31 | No |
| Administrative expenses professional fees incurred | 2022-12-31 | $411,317 |
| Was this plan covered by a fidelity bond | 2022-12-31 | Yes |
| Value of fidelity bond cover | 2022-12-31 | $20,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2022-12-31 | No |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2022-12-31 | No |
| Value of net income/loss | 2022-12-31 | $-213,423,535 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $490,129,749 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $703,553,284 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2022-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2022-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2022-12-31 | No |
| Value of interest in master investment trust accounts at end of year | 2022-12-31 | $490,129,749 |
| Value of interest in master investment trust accounts at beginning of year | 2022-12-31 | $703,553,284 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2022-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2022-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2022-12-31 | No |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2022-12-31 | $83,631,323 |
| Did the plan have assets held for investment | 2022-12-31 | No |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2022-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2022-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2022-12-31 | Unqualified |
| Accountancy firm name | 2022-12-31 | CLIFTONLARSONALLEN LLP |
| Accountancy firm EIN | 2022-12-31 | 410746749 |
| 2021 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2021 401k financial data |
|---|
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $0 |
| Total income from all sources (including contributions) | 2021-12-31 | $59,997,364 |
| Total loss/gain on sale of assets | 2021-12-31 | $0 |
| Total of all expenses incurred | 2021-12-31 | $73,981,410 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2021-12-31 | $72,752,358 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2021-12-31 | $0 |
| Value of total assets at end of year | 2021-12-31 | $703,553,284 |
| Value of total assets at beginning of year | 2021-12-31 | $717,537,330 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $1,229,052 |
| Total interest from all sources | 2021-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $0 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2021-12-31 | No |
| Administrative expenses professional fees incurred | 2021-12-31 | $775,275 |
| Was this plan covered by a fidelity bond | 2021-12-31 | Yes |
| Value of fidelity bond cover | 2021-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2021-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2021-12-31 | No |
| Other income not declared elsewhere | 2021-12-31 | $0 |
| Administrative expenses (other) incurred | 2021-12-31 | $453,777 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2021-12-31 | No |
| Value of net income/loss | 2021-12-31 | $-13,984,046 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $703,553,284 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $717,537,330 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2021-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2021-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2021-12-31 | No |
| Value of interest in master investment trust accounts at end of year | 2021-12-31 | $703,553,284 |
| Value of interest in master investment trust accounts at beginning of year | 2021-12-31 | $717,537,330 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2021-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2021-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2021-12-31 | No |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2021-12-31 | $72,752,358 |
| Did the plan have assets held for investment | 2021-12-31 | No |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2021-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2021-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2021-12-31 | Unqualified |
| Accountancy firm name | 2021-12-31 | CLIFTONLARSONALLEN LLP |
| Accountancy firm EIN | 2021-12-31 | 410746749 |
| 2020 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $37,623,914 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $37,623,914 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $635,550 |
| Total income from all sources (including contributions) | 2020-12-31 | $55,990,525 |
| Total loss/gain on sale of assets | 2020-12-31 | $-33,311,846 |
| Total of all expenses incurred | 2020-12-31 | $54,766,781 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2020-12-31 | $53,603,916 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2020-12-31 | $0 |
| Value of total assets at end of year | 2020-12-31 | $717,537,330 |
| Value of total assets at beginning of year | 2020-12-31 | $716,949,136 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $1,162,865 |
| Total interest from all sources | 2020-12-31 | $1,651,147 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $1,832,084 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2020-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2020-12-31 | $915,463 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2020-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2020-12-31 | $676,930 |
| Was this plan covered by a fidelity bond | 2020-12-31 | Yes |
| Value of fidelity bond cover | 2020-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2020-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2020-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2020-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $5,366,058 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $1,191,936 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $105,259 |
| Other income not declared elsewhere | 2020-12-31 | $186,521 |
| Administrative expenses (other) incurred | 2020-12-31 | $529,737 |
| Liabilities. Value of operating payables at end of year | 2020-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2020-12-31 | $530,291 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2020-12-31 | No |
| Value of net income/loss | 2020-12-31 | $1,223,744 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $717,537,330 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $716,313,586 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2020-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2020-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2020-12-31 | No |
| Investment advisory and management fees | 2020-12-31 | $633,128 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2020-12-31 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2020-12-31 | $150,115,985 |
| Interest earned on other investments | 2020-12-31 | $1,170,823 |
| Income. Interest from US Government securities | 2020-12-31 | $255,267 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $225,208 |
| Value of interest in master investment trust accounts at end of year | 2020-12-31 | $717,537,330 |
| Value of interest in master investment trust accounts at beginning of year | 2020-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2020-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2020-12-31 | $217,187,729 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $0 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $20,349,315 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $20,349,315 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $-151 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2020-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2020-12-31 | $42,597,882 |
| Asset value of US Government securities at end of year | 2020-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $49,023,029 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2020-12-31 | $-1,220,336 |
| Net investment gain or loss from common/collective trusts | 2020-12-31 | $-64,786,459 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2020-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2020-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2020-12-31 | No |
| Income. Dividends from preferred stock | 2020-12-31 | $25,446 |
| Income. Dividends from common stock | 2020-12-31 | $891,175 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2020-12-31 | $53,603,916 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $60,366,354 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2020-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2020-12-31 | $170,073,918 |
| Did the plan have assets held for investment | 2020-12-31 | No |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2020-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2020-12-31 | No |
| Aggregate proceeds on sale of assets | 2020-12-31 | $158,733,332 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $192,045,178 |
| Opinion of an independent qualified public accountant for this plan | 2020-12-31 | Disclaimer |
| Accountancy firm name | 2020-12-31 | CLIFTONLARSONALLEN LLP |
| Accountancy firm EIN | 2020-12-31 | 410746749 |
| 2019 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $42,537,868 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $42,537,868 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $42,537,868 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $42,537,868 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $635,550 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $635,550 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $806,890 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $806,890 |
| Total income from all sources (including contributions) | 2019-12-31 | $126,479,993 |
| Total income from all sources (including contributions) | 2019-12-31 | $126,479,993 |
| Total loss/gain on sale of assets | 2019-12-31 | $5,354,722 |
| Total loss/gain on sale of assets | 2019-12-31 | $5,354,722 |
| Total of all expenses incurred | 2019-12-31 | $53,976,648 |
| Total of all expenses incurred | 2019-12-31 | $53,976,648 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2019-12-31 | $50,383,438 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2019-12-31 | $50,383,438 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $30,465 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $30,465 |
| Value of total assets at end of year | 2019-12-31 | $716,949,136 |
| Value of total assets at end of year | 2019-12-31 | $716,949,136 |
| Value of total assets at beginning of year | 2019-12-31 | $644,617,131 |
| Value of total assets at beginning of year | 2019-12-31 | $644,617,131 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $3,593,210 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $3,593,210 |
| Total interest from all sources | 2019-12-31 | $5,489,139 |
| Total interest from all sources | 2019-12-31 | $5,489,139 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $8,373,868 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $8,373,868 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2019-12-31 | No |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2019-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2019-12-31 | $5,196,391 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2019-12-31 | $5,196,391 |
| Administrative expenses professional fees incurred | 2019-12-31 | $447,987 |
| Administrative expenses professional fees incurred | 2019-12-31 | $447,987 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2019-12-31 | $676,930 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2019-12-31 | $676,930 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2019-12-31 | $643,571 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2019-12-31 | $643,571 |
| Was this plan covered by a fidelity bond | 2019-12-31 | Yes |
| Value of fidelity bond cover | 2019-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2019-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2019-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $5,366,058 |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $5,366,058 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $5,916,404 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $5,916,404 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $1,191,936 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $1,191,936 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $1,374,226 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $1,374,226 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $105,259 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $105,259 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $188,334 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $188,334 |
| Administrative expenses (other) incurred | 2019-12-31 | $554,652 |
| Administrative expenses (other) incurred | 2019-12-31 | $554,652 |
| Liabilities. Value of operating payables at end of year | 2019-12-31 | $530,291 |
| Liabilities. Value of operating payables at end of year | 2019-12-31 | $530,291 |
| Liabilities. Value of operating payables at beginning of year | 2019-12-31 | $618,556 |
| Liabilities. Value of operating payables at beginning of year | 2019-12-31 | $618,556 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Value of net income/loss | 2019-12-31 | $72,503,345 |
| Value of net income/loss | 2019-12-31 | $72,503,345 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $716,313,586 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $716,313,586 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $643,810,241 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $643,810,241 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2019-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2019-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2019-12-31 | No |
| Investment advisory and management fees | 2019-12-31 | $2,462,720 |
| Investment advisory and management fees | 2019-12-31 | $2,462,720 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $150,115,985 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $150,115,985 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2019-12-31 | $144,020,236 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2019-12-31 | $144,020,236 |
| Interest earned on other investments | 2019-12-31 | $265,886 |
| Interest earned on other investments | 2019-12-31 | $265,886 |
| Income. Interest from US Government securities | 2019-12-31 | $1,460,591 |
| Income. Interest from US Government securities | 2019-12-31 | $1,460,591 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $3,345,664 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $3,345,664 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $217,187,729 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $217,187,729 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $185,223,943 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $185,223,943 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $20,349,315 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $20,349,315 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $18,550,403 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $18,550,403 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $18,550,403 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $18,550,403 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $416,998 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $416,998 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $42,597,882 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $42,597,882 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2019-12-31 | $36,401,609 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2019-12-31 | $36,401,609 |
| Asset value of US Government securities at end of year | 2019-12-31 | $49,023,029 |
| Asset value of US Government securities at end of year | 2019-12-31 | $49,023,029 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $44,191,850 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $44,191,850 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $9,656,512 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $9,656,512 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $48,496,976 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $48,496,976 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $6,540,443 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $6,540,443 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2019-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2019-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2019-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2019-12-31 | No |
| Contributions received in cash from employer | 2019-12-31 | $30,465 |
| Contributions received in cash from employer | 2019-12-31 | $30,465 |
| Income. Dividends from preferred stock | 2019-12-31 | $54,922 |
| Income. Dividends from preferred stock | 2019-12-31 | $54,922 |
| Income. Dividends from common stock | 2019-12-31 | $3,122,555 |
| Income. Dividends from common stock | 2019-12-31 | $3,122,555 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2019-12-31 | $50,383,438 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2019-12-31 | $50,383,438 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $60,366,354 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $60,366,354 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $61,979,174 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $61,979,174 |
| Contract administrator fees | 2019-12-31 | $127,851 |
| Contract administrator fees | 2019-12-31 | $127,851 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $170,073,918 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $170,073,918 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $146,315,715 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $146,315,715 |
| Did the plan have assets held for investment | 2019-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2019-12-31 | No |
| Aggregate proceeds on sale of assets | 2019-12-31 | $131,956,920 |
| Aggregate proceeds on sale of assets | 2019-12-31 | $131,956,920 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $126,602,198 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $126,602,198 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2019-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2019-12-31 | Disclaimer |
| Opinion of an independent qualified public accountant for this plan | 2019-12-31 | Disclaimer |
| Accountancy firm name | 2019-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2019-12-31 | 133891517 |
| 2018 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-48,881,925 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-48,881,925 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $806,890 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $699,666 |
| Total income from all sources (including contributions) | 2018-12-31 | $-35,114,477 |
| Total loss/gain on sale of assets | 2018-12-31 | $13,717,554 |
| Total of all expenses incurred | 2018-12-31 | $65,598,625 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2018-12-31 | $61,716,952 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2018-12-31 | $31,652 |
| Value of total assets at end of year | 2018-12-31 | $644,617,131 |
| Value of total assets at beginning of year | 2018-12-31 | $745,223,009 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $3,881,673 |
| Total interest from all sources | 2018-12-31 | $5,238,233 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $8,326,948 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2018-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2018-12-31 | $5,112,999 |
| Administrative expenses professional fees incurred | 2018-12-31 | $367,088 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2018-12-31 | $643,571 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2018-12-31 | $669,138 |
| Was this plan covered by a fidelity bond | 2018-12-31 | Yes |
| Value of fidelity bond cover | 2018-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2018-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2018-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2018-12-31 | $5,916,404 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $6,703,678 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $1,374,226 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $1,605,477 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $188,334 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $235,633 |
| Administrative expenses (other) incurred | 2018-12-31 | $716,178 |
| Liabilities. Value of operating payables at end of year | 2018-12-31 | $618,556 |
| Liabilities. Value of operating payables at beginning of year | 2018-12-31 | $464,033 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2018-12-31 | No |
| Value of net income/loss | 2018-12-31 | $-100,713,102 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $643,810,241 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $744,523,343 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2018-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2018-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2018-12-31 | No |
| Investment advisory and management fees | 2018-12-31 | $2,687,534 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2018-12-31 | $144,020,236 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2018-12-31 | $159,589,725 |
| Interest earned on other investments | 2018-12-31 | $339,570 |
| Income. Interest from US Government securities | 2018-12-31 | $1,599,611 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $3,057,536 |
| Value of interest in common/collective trusts at end of year | 2018-12-31 | $185,223,943 |
| Value of interest in common/collective trusts at beginning of year | 2018-12-31 | $220,405,455 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $18,550,403 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $15,296,569 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $15,296,569 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $241,516 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2018-12-31 | $36,401,609 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2018-12-31 | $46,615,791 |
| Asset value of US Government securities at end of year | 2018-12-31 | $44,191,850 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $53,943,071 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2018-12-31 | $-6,874,446 |
| Net investment gain or loss from common/collective trusts | 2018-12-31 | $-819,319 |
| Net gain/loss from 103.12 investment entities | 2018-12-31 | $-5,853,174 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2018-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2018-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2018-12-31 | No |
| Contributions received in cash from employer | 2018-12-31 | $31,652 |
| Income. Dividends from preferred stock | 2018-12-31 | $51,417 |
| Income. Dividends from common stock | 2018-12-31 | $3,162,532 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2018-12-31 | $61,716,952 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $61,979,174 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $58,898,359 |
| Contract administrator fees | 2018-12-31 | $110,873 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2018-12-31 | $146,315,715 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2018-12-31 | $181,495,746 |
| Did the plan have assets held for investment | 2018-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2018-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2018-12-31 | No |
| Aggregate proceeds on sale of assets | 2018-12-31 | $132,435,497 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $118,717,943 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2018-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2018-12-31 | Disclaimer |
| Accountancy firm name | 2018-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2018-12-31 | 133891517 |
| 2017 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $27,949,523 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $27,949,523 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $699,666 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $1,149,907 |
| Total income from all sources (including contributions) | 2017-12-31 | $118,197,082 |
| Total loss/gain on sale of assets | 2017-12-31 | $17,519,138 |
| Total of all expenses incurred | 2017-12-31 | $56,902,197 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2017-12-31 | $53,358,411 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2017-12-31 | $31,006 |
| Value of total assets at end of year | 2017-12-31 | $745,223,009 |
| Value of total assets at beginning of year | 2017-12-31 | $684,378,365 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $3,543,786 |
| Total interest from all sources | 2017-12-31 | $4,578,807 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $7,774,423 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2017-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2017-12-31 | $4,553,218 |
| Administrative expenses professional fees incurred | 2017-12-31 | $520,619 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2017-12-31 | $669,138 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2017-12-31 | $464,760 |
| Was this plan covered by a fidelity bond | 2017-12-31 | Yes |
| Value of fidelity bond cover | 2017-12-31 | $25,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2017-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2017-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2017-12-31 | $6,703,678 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $6,268,009 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $1,605,477 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $1,584,358 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $235,633 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $273,861 |
| Other income not declared elsewhere | 2017-12-31 | $368,058 |
| Administrative expenses (other) incurred | 2017-12-31 | $188,624 |
| Liabilities. Value of operating payables at end of year | 2017-12-31 | $464,033 |
| Liabilities. Value of operating payables at beginning of year | 2017-12-31 | $876,046 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2017-12-31 | No |
| Value of net income/loss | 2017-12-31 | $61,294,885 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $744,523,343 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $683,228,458 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2017-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2017-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2017-12-31 | No |
| Investment advisory and management fees | 2017-12-31 | $2,728,585 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2017-12-31 | $159,589,725 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2017-12-31 | $125,036,881 |
| Interest earned on other investments | 2017-12-31 | $310,219 |
| Income. Interest from US Government securities | 2017-12-31 | $1,212,572 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $2,857,872 |
| Value of interest in common/collective trusts at end of year | 2017-12-31 | $220,405,455 |
| Value of interest in common/collective trusts at beginning of year | 2017-12-31 | $230,763,301 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $15,296,569 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $15,088,681 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $15,088,681 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $198,144 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2017-12-31 | $46,615,791 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2017-12-31 | $52,429,681 |
| Asset value of US Government securities at end of year | 2017-12-31 | $53,943,071 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $31,936,014 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-12-31 | $4,182,496 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $43,190,153 |
| Net gain/loss from 103.12 investment entities | 2017-12-31 | $12,603,478 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2017-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2017-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2017-12-31 | No |
| Contributions received in cash from employer | 2017-12-31 | $31,006 |
| Income. Dividends from preferred stock | 2017-12-31 | $37,086 |
| Income. Dividends from common stock | 2017-12-31 | $3,184,119 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2017-12-31 | $53,358,411 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $58,898,359 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $52,037,262 |
| Contract administrator fees | 2017-12-31 | $105,958 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2017-12-31 | $181,495,746 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2017-12-31 | $168,769,418 |
| Did the plan have assets held for investment | 2017-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2017-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2017-12-31 | No |
| Aggregate proceeds on sale of assets | 2017-12-31 | $45,164,657 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $27,645,519 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2017-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2017-12-31 | Disclaimer |
| Accountancy firm name | 2017-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2017-12-31 | 133891517 |
| 2016 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $18,797,408 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $18,797,408 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $1,149,907 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $1,055,065 |
| Total income from all sources (including contributions) | 2016-12-31 | $61,059,556 |
| Total loss/gain on sale of assets | 2016-12-31 | $7,363,145 |
| Total of all expenses incurred | 2016-12-31 | $55,132,087 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2016-12-31 | $51,151,378 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2016-12-31 | $0 |
| Value of total assets at end of year | 2016-12-31 | $684,378,365 |
| Value of total assets at beginning of year | 2016-12-31 | $678,356,054 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $3,980,709 |
| Total interest from all sources | 2016-12-31 | $4,472,688 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $7,832,153 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2016-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2016-12-31 | $4,347,053 |
| Administrative expenses professional fees incurred | 2016-12-31 | $388,462 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2016-12-31 | $464,760 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2016-12-31 | $764,106 |
| Was this plan covered by a fidelity bond | 2016-12-31 | Yes |
| Value of fidelity bond cover | 2016-12-31 | $25,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2016-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2016-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2016-12-31 | $6,268,009 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $6,459,877 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $1,584,358 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $1,576,664 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $273,861 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $344,648 |
| Other income not declared elsewhere | 2016-12-31 | $71,810 |
| Administrative expenses (other) incurred | 2016-12-31 | $809,659 |
| Liabilities. Value of operating payables at end of year | 2016-12-31 | $876,046 |
| Liabilities. Value of operating payables at beginning of year | 2016-12-31 | $710,417 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2016-12-31 | No |
| Value of net income/loss | 2016-12-31 | $5,927,469 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $683,228,458 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $677,300,989 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2016-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2016-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2016-12-31 | No |
| Investment advisory and management fees | 2016-12-31 | $2,680,705 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2016-12-31 | $125,036,881 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2016-12-31 | $124,535,330 |
| Interest earned on other investments | 2016-12-31 | $326,542 |
| Income. Interest from US Government securities | 2016-12-31 | $970,838 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $3,046,339 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $230,763,301 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $223,218,005 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $15,088,681 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $15,406,547 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $15,406,547 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $128,969 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2016-12-31 | $52,429,681 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2016-12-31 | $48,827,041 |
| Asset value of US Government securities at end of year | 2016-12-31 | $31,936,014 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $31,528,474 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2016-12-31 | $-2,016,644 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $20,525,630 |
| Net gain/loss from 103.12 investment entities | 2016-12-31 | $4,013,366 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2016-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2016-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2016-12-31 | No |
| Income. Dividends from preferred stock | 2016-12-31 | $37,001 |
| Income. Dividends from common stock | 2016-12-31 | $3,448,099 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2016-12-31 | $51,151,378 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $52,037,262 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $56,162,506 |
| Contract administrator fees | 2016-12-31 | $101,883 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2016-12-31 | $168,769,418 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2016-12-31 | $169,877,504 |
| Did the plan have assets held for investment | 2016-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2016-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2016-12-31 | No |
| Aggregate proceeds on sale of assets | 2016-12-31 | $285,521,701 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $278,158,556 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2016-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2016-12-31 | Disclaimer |
| Accountancy firm name | 2016-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2016-12-31 | 133891517 |
| 2015 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-22,260,384 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-22,260,384 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $1,055,065 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $1,156,639 |
| Total income from all sources (including contributions) | 2015-12-31 | $7,635,732 |
| Total loss/gain on sale of assets | 2015-12-31 | $15,772,400 |
| Total of all expenses incurred | 2015-12-31 | $59,835,838 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2015-12-31 | $56,139,673 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2015-12-31 | $0 |
| Value of total assets at end of year | 2015-12-31 | $678,356,054 |
| Value of total assets at beginning of year | 2015-12-31 | $730,657,734 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $3,696,165 |
| Total interest from all sources | 2015-12-31 | $4,145,611 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $9,659,019 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2015-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2015-12-31 | $6,303,438 |
| Administrative expenses professional fees incurred | 2015-12-31 | $368,785 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2015-12-31 | $764,106 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2015-12-31 | $781,452 |
| Was this plan covered by a fidelity bond | 2015-12-31 | Yes |
| Value of fidelity bond cover | 2015-12-31 | $25,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2015-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2015-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2015-12-31 | $6,459,877 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $3,969,295 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $1,576,664 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $937,146 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $344,648 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $369,745 |
| Other income not declared elsewhere | 2015-12-31 | $-538,224 |
| Administrative expenses (other) incurred | 2015-12-31 | $546,724 |
| Liabilities. Value of operating payables at end of year | 2015-12-31 | $710,417 |
| Liabilities. Value of operating payables at beginning of year | 2015-12-31 | $786,894 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2015-12-31 | No |
| Value of net income/loss | 2015-12-31 | $-52,200,106 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $677,300,989 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $729,501,095 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2015-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2015-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2015-12-31 | No |
| Investment advisory and management fees | 2015-12-31 | $2,690,323 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2015-12-31 | $124,535,330 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2015-12-31 | $160,362,615 |
| Interest earned on other investments | 2015-12-31 | $325,651 |
| Income. Interest from US Government securities | 2015-12-31 | $1,136,433 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $2,534,908 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $223,218,005 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $230,155,177 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $15,406,547 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $23,472,558 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $23,472,558 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $148,619 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2015-12-31 | $48,827,041 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2015-12-31 | $52,804,465 |
| Asset value of US Government securities at end of year | 2015-12-31 | $31,528,474 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $40,895,292 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2015-12-31 | $-13,490,009 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $12,891,961 |
| Net gain/loss from 103.12 investment entities | 2015-12-31 | $1,455,358 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2015-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2015-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2015-12-31 | No |
| Income. Dividends from preferred stock | 2015-12-31 | $57,881 |
| Income. Dividends from common stock | 2015-12-31 | $3,297,700 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2015-12-31 | $56,139,673 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $56,162,506 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $27,852,922 |
| Contract administrator fees | 2015-12-31 | $90,333 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2015-12-31 | $169,877,504 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2015-12-31 | $189,426,812 |
| Did the plan have assets held for investment | 2015-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2015-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2015-12-31 | No |
| Aggregate proceeds on sale of assets | 2015-12-31 | $146,080,047 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $130,307,647 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2015-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2015-12-31 | Disclaimer |
| Accountancy firm name | 2015-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2015-12-31 | 133891517 |
| 2014 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $-12,313,366 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $-12,313,366 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $1,156,639 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $53,101,961 |
| Total income from all sources (including contributions) | 2014-12-31 | $55,879,615 |
| Total loss/gain on sale of assets | 2014-12-31 | $26,516,471 |
| Total of all expenses incurred | 2014-12-31 | $47,934,206 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2014-12-31 | $43,751,568 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2014-12-31 | $98,255 |
| Value of total assets at end of year | 2014-12-31 | $730,657,734 |
| Value of total assets at beginning of year | 2014-12-31 | $774,657,647 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $4,182,638 |
| Total interest from all sources | 2014-12-31 | $3,476,870 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $8,752,284 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2014-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2014-12-31 | $4,602,372 |
| Administrative expenses professional fees incurred | 2014-12-31 | $521,345 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2014-12-31 | $781,452 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2014-12-31 | $733,025 |
| Was this plan covered by a fidelity bond | 2014-12-31 | Yes |
| Value of fidelity bond cover | 2014-12-31 | $25,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2014-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2014-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2014-12-31 | $3,969,295 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $4,629,303 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $937,146 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $33,908,614 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $369,745 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $52,368,372 |
| Other income not declared elsewhere | 2014-12-31 | $449,680 |
| Administrative expenses (other) incurred | 2014-12-31 | $703,940 |
| Liabilities. Value of operating payables at end of year | 2014-12-31 | $786,894 |
| Liabilities. Value of operating payables at beginning of year | 2014-12-31 | $733,589 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2014-12-31 | No |
| Value of net income/loss | 2014-12-31 | $7,945,409 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $729,501,095 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $721,555,686 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2014-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2014-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2014-12-31 | No |
| Investment advisory and management fees | 2014-12-31 | $2,872,041 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2014-12-31 | $160,362,615 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2014-12-31 | $104,439,592 |
| Interest earned on other investments | 2014-12-31 | $228,870 |
| Income. Interest from US Government securities | 2014-12-31 | $1,422,833 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $1,647,257 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $230,155,177 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $249,014,130 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $23,472,558 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $35,775,751 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $35,775,751 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $177,910 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2014-12-31 | $52,804,465 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2014-12-31 | $59,716,660 |
| Asset value of US Government securities at end of year | 2014-12-31 | $40,895,292 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $41,261,193 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2014-12-31 | $144,498 |
| Net investment gain or loss from common/collective trusts | 2014-12-31 | $29,234,122 |
| Net gain/loss from 103.12 investment entities | 2014-12-31 | $-479,199 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2014-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2014-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2014-12-31 | No |
| Contributions received in cash from employer | 2014-12-31 | $98,255 |
| Income. Dividends from preferred stock | 2014-12-31 | $45,281 |
| Income. Dividends from common stock | 2014-12-31 | $4,104,631 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2014-12-31 | $43,751,568 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $27,852,922 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $29,886,269 |
| Contract administrator fees | 2014-12-31 | $85,312 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2014-12-31 | $189,426,812 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2014-12-31 | $215,293,110 |
| Did the plan have assets held for investment | 2014-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2014-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2014-12-31 | No |
| Aggregate proceeds on sale of assets | 2014-12-31 | $208,209,362 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $181,692,891 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2014-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2014-12-31 | Disclaimer |
| Accountancy firm name | 2014-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2014-12-31 | 133891517 |
| 2013 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $29,032,358 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $29,032,358 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $53,101,961 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $1,637,638 |
| Total income from all sources (including contributions) | 2013-12-31 | $144,275,932 |
| Total loss/gain on sale of assets | 2013-12-31 | $31,079,893 |
| Total of all expenses incurred | 2013-12-31 | $65,371,804 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2013-12-31 | $61,531,082 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2013-12-31 | $0 |
| Value of total assets at end of year | 2013-12-31 | $774,657,647 |
| Value of total assets at beginning of year | 2013-12-31 | $644,289,196 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $3,840,722 |
| Total interest from all sources | 2013-12-31 | $3,410,363 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $7,268,024 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2013-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2013-12-31 | $3,940,564 |
| Administrative expenses professional fees incurred | 2013-12-31 | $559,970 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2013-12-31 | $733,025 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2013-12-31 | $588,690 |
| Was this plan covered by a fidelity bond | 2013-12-31 | Yes |
| Value of fidelity bond cover | 2013-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2013-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2013-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $4,629,303 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $5,258,908 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $33,908,614 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $1,012,577 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $52,368,372 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $841,480 |
| Other income not declared elsewhere | 2013-12-31 | $-2,537,705 |
| Administrative expenses (other) incurred | 2013-12-31 | $616,215 |
| Liabilities. Value of operating payables at end of year | 2013-12-31 | $733,589 |
| Liabilities. Value of operating payables at beginning of year | 2013-12-31 | $796,158 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2013-12-31 | No |
| Value of net income/loss | 2013-12-31 | $78,904,128 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $721,555,686 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $642,651,558 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2013-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2013-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2013-12-31 | No |
| Investment advisory and management fees | 2013-12-31 | $2,581,881 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2013-12-31 | $104,439,592 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2013-12-31 | $101,221,468 |
| Interest earned on other investments | 2013-12-31 | $261,887 |
| Income. Interest from US Government securities | 2013-12-31 | $1,329,621 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $1,743,505 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $249,014,130 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $220,482,584 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $35,775,751 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $10,827,116 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $10,827,116 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $75,350 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2013-12-31 | $59,716,660 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2013-12-31 | $46,253,464 |
| Asset value of US Government securities at end of year | 2013-12-31 | $41,261,193 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $47,864,452 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2013-12-31 | $-5,511,040 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $31,623,213 |
| Net gain/loss from 103.12 investment entities | 2013-12-31 | $49,910,826 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2013-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2013-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2013-12-31 | No |
| Income. Dividends from preferred stock | 2013-12-31 | $44,395 |
| Income. Dividends from common stock | 2013-12-31 | $3,283,065 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2013-12-31 | $61,531,082 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $29,886,269 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $30,275,135 |
| Contract administrator fees | 2013-12-31 | $82,656 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2013-12-31 | $215,293,110 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2013-12-31 | $180,504,802 |
| Did the plan have assets held for investment | 2013-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2013-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2013-12-31 | No |
| Aggregate proceeds on sale of assets | 2013-12-31 | $161,918,756 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $130,838,863 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2013-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2013-12-31 | Disclaimer |
| Accountancy firm name | 2013-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2013-12-31 | 133891517 |
| 2012 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2012 401k financial data |
|---|
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $1,637,638 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $664,565 |
| Total income from all sources (including contributions) | 2012-12-31 | $77,642,408 |
| Total loss/gain on sale of assets | 2012-12-31 | $20,645,357 |
| Total of all expenses incurred | 2012-12-31 | $46,455,248 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2012-12-31 | $43,064,568 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2012-12-31 | $0 |
| Value of total assets at end of year | 2012-12-31 | $644,289,196 |
| Value of total assets at beginning of year | 2012-12-31 | $612,128,963 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $3,390,680 |
| Total interest from all sources | 2012-12-31 | $3,547,871 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $6,460,093 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2012-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2012-12-31 | $3,661,625 |
| Administrative expenses professional fees incurred | 2012-12-31 | $484,252 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2012-12-31 | $588,690 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2012-12-31 | $419,566 |
| Was this plan covered by a fidelity bond | 2012-12-31 | Yes |
| Value of fidelity bond cover | 2012-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2012-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2012-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $5,258,908 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $5,070,567 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $1,012,577 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $1,120,726 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $841,480 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $129,954 |
| Other income not declared elsewhere | 2012-12-31 | $2,602,474 |
| Administrative expenses (other) incurred | 2012-12-31 | $624,918 |
| Liabilities. Value of operating payables at end of year | 2012-12-31 | $796,158 |
| Liabilities. Value of operating payables at beginning of year | 2012-12-31 | $534,611 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2012-12-31 | No |
| Value of net income/loss | 2012-12-31 | $31,187,160 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $642,651,558 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $611,464,398 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2012-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2012-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2012-12-31 | No |
| Investment advisory and management fees | 2012-12-31 | $2,093,038 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2012-12-31 | $101,221,468 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2012-12-31 | $75,978,126 |
| Interest earned on other investments | 2012-12-31 | $273,418 |
| Income. Interest from US Government securities | 2012-12-31 | $1,558,569 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $1,690,564 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $220,482,584 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $209,618,100 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $10,827,116 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $7,649,698 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $7,649,698 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $25,320 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2012-12-31 | $46,253,464 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2012-12-31 | $41,227,595 |
| Asset value of US Government securities at end of year | 2012-12-31 | $47,864,452 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $41,258,298 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2012-12-31 | $4,480,312 |
| Net investment gain or loss from common/collective trusts | 2012-12-31 | $1,794,549 |
| Net gain/loss from 103.12 investment entities | 2012-12-31 | $38,111,752 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2012-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2012-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2012-12-31 | No |
| Employer contributions (assets) at end of year | 2012-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2012-12-31 | $57,140,000 |
| Income. Dividends from preferred stock | 2012-12-31 | $39,080 |
| Income. Dividends from common stock | 2012-12-31 | $2,759,388 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2012-12-31 | $43,064,568 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $30,275,135 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $28,750,038 |
| Contract administrator fees | 2012-12-31 | $188,472 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2012-12-31 | $180,504,802 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2012-12-31 | $143,896,249 |
| Did the plan have assets held for investment | 2012-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2012-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2012-12-31 | No |
| Aggregate proceeds on sale of assets | 2012-12-31 | $404,306,584 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $383,661,227 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2012-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2012-12-31 | Disclaimer |
| Accountancy firm name | 2012-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2012-12-31 | 133891517 |
| 2011 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $-11,665,098 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $-11,665,098 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $664,565 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $566,241 |
| Total income from all sources (including contributions) | 2011-12-31 | $59,666,788 |
| Total loss/gain on sale of assets | 2011-12-31 | $0 |
| Total of all expenses incurred | 2011-12-31 | $41,986,805 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2011-12-31 | $38,721,293 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2011-12-31 | $57,140,000 |
| Value of total assets at end of year | 2011-12-31 | $612,128,963 |
| Value of total assets at beginning of year | 2011-12-31 | $594,350,656 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $3,265,512 |
| Total interest from all sources | 2011-12-31 | $4,073,687 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $4,878,042 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2011-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2011-12-31 | $3,104,586 |
| Administrative expenses professional fees incurred | 2011-12-31 | $227,441 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2011-12-31 | $419,566 |
| Was this plan covered by a fidelity bond | 2011-12-31 | Yes |
| Value of fidelity bond cover | 2011-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2011-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2011-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $5,070,567 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $2,538,926 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $1,120,726 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $1,105,893 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $129,954 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $76,039 |
| Other income not declared elsewhere | 2011-12-31 | $524 |
| Administrative expenses (other) incurred | 2011-12-31 | $956,615 |
| Liabilities. Value of operating payables at end of year | 2011-12-31 | $534,611 |
| Liabilities. Value of operating payables at beginning of year | 2011-12-31 | $490,202 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2011-12-31 | No |
| Value of net income/loss | 2011-12-31 | $17,679,983 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $611,464,398 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $593,784,415 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2011-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2011-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2011-12-31 | No |
| Investment advisory and management fees | 2011-12-31 | $2,081,456 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2011-12-31 | $75,978,126 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2011-12-31 | $169,519,423 |
| Interest earned on other investments | 2011-12-31 | $261,179 |
| Income. Interest from US Government securities | 2011-12-31 | $2,024,294 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $1,765,078 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $209,618,100 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $177,370,512 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $7,649,698 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $10,267,584 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $10,267,584 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $23,136 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2011-12-31 | $41,227,595 |
| Asset value of US Government securities at end of year | 2011-12-31 | $41,258,298 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $37,561,030 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2011-12-31 | $112,788 |
| Net investment gain or loss from common/collective trusts | 2011-12-31 | $6,555,108 |
| Net gain/loss from 103.12 investment entities | 2011-12-31 | $-1,428,263 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2011-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2011-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2011-12-31 | No |
| Contributions received in cash from employer | 2011-12-31 | $57,140,000 |
| Employer contributions (assets) at end of year | 2011-12-31 | $57,140,000 |
| Employer contributions (assets) at beginning of year | 2011-12-31 | $48,100,000 |
| Income. Dividends from preferred stock | 2011-12-31 | $21,410 |
| Income. Dividends from common stock | 2011-12-31 | $1,752,046 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2011-12-31 | $38,721,293 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $28,750,038 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $25,172,694 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2011-12-31 | $143,896,249 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2011-12-31 | $122,714,594 |
| Did the plan have assets held for investment | 2011-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2011-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2011-12-31 | No |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2011-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2011-12-31 | Disclaimer |
| Accountancy firm name | 2011-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2011-12-31 | 133891517 |
| 2010 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $6,266,521 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $6,266,521 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $566,241 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $2,903,989 |
| Total income from all sources (including contributions) | 2010-12-31 | $131,387,694 |
| Total loss/gain on sale of assets | 2010-12-31 | $22,990,013 |
| Total of all expenses incurred | 2010-12-31 | $34,059,970 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2010-12-31 | $30,625,476 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2010-12-31 | $65,510,000 |
| Value of total assets at end of year | 2010-12-31 | $594,350,656 |
| Value of total assets at beginning of year | 2010-12-31 | $499,360,680 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $3,434,494 |
| Total interest from all sources | 2010-12-31 | $5,463,436 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $2,147,352 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2010-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2010-12-31 | $664,812 |
| Administrative expenses professional fees incurred | 2010-12-31 | $696,194 |
| Was this plan covered by a fidelity bond | 2010-12-31 | Yes |
| Value of fidelity bond cover | 2010-12-31 | $20,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2010-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2010-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2010-12-31 | $2,538,926 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $1,105,893 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $1,217,962 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $76,039 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $2,455,900 |
| Administrative expenses (other) incurred | 2010-12-31 | $664,824 |
| Liabilities. Value of operating payables at end of year | 2010-12-31 | $490,202 |
| Liabilities. Value of operating payables at beginning of year | 2010-12-31 | $448,089 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2010-12-31 | No |
| Value of net income/loss | 2010-12-31 | $97,327,724 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $593,784,415 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $496,456,691 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2010-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2010-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2010-12-31 | No |
| Investment advisory and management fees | 2010-12-31 | $2,073,476 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2010-12-31 | $169,519,423 |
| Interest earned on other investments | 2010-12-31 | $225,846 |
| Income. Interest from US Government securities | 2010-12-31 | $2,582,065 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $2,618,283 |
| Value of interest in master investment trust accounts at beginning of year | 2010-12-31 | $498,142,718 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $177,370,512 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $10,267,584 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $37,242 |
| Asset value of US Government securities at end of year | 2010-12-31 | $37,561,030 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2010-12-31 | $10,394,674 |
| Net investment gain or loss from common/collective trusts | 2010-12-31 | $18,615,698 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2010-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2010-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2010-12-31 | No |
| Contributions received in cash from employer | 2010-12-31 | $65,510,000 |
| Employer contributions (assets) at end of year | 2010-12-31 | $48,100,000 |
| Income. Dividends from common stock | 2010-12-31 | $1,482,540 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2010-12-31 | $30,625,476 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $25,172,694 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2010-12-31 | $122,714,594 |
| Did the plan have assets held for investment | 2010-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2010-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2010-12-31 | No |
| Aggregate proceeds on sale of assets | 2010-12-31 | $407,238,376 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $384,248,363 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2010-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2010-12-31 | Disclaimer |
| Accountancy firm name | 2010-12-31 | DELOITTE & TOUCHE LLP |
| Accountancy firm EIN | 2010-12-31 | 133891517 |
| 2009 : MIDAMERICAN ENERGY COMPANY RETIREMENT PLAN 2009 401k financial data |
|---|
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2009-12-31 | $0 |
