EVERSOURCE ENERGY SERVICE COMPANY has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT
401k plan membership statisitcs for EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT
| Measure | Date | Value |
|---|
| 2022 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-294,241,057 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-294,241,057 |
| Total transfer of assets to this plan | 2022-12-31 | $30,061,516 |
| Total transfer of assets from this plan | 2022-12-31 | $312,023,222 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $347,046,998 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $1,317,010,255 |
| Expenses. Interest paid | 2022-12-31 | $997,356 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2022-12-31 | $997,356 |
| Total income from all sources (including contributions) | 2022-12-31 | $-394,208,943 |
| Total loss/gain on sale of assets | 2022-12-31 | $21,287,170 |
| Total of all expenses incurred | 2022-12-31 | $23,698,682 |
| Value of total assets at end of year | 2022-12-31 | $6,278,017,338 |
| Value of total assets at beginning of year | 2022-12-31 | $7,947,849,926 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $22,701,326 |
| Total interest from all sources | 2022-12-31 | $22,354,581 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $10,216,558 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2022-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2022-12-31 | $8,759,695 |
| Administrative expenses professional fees incurred | 2022-12-31 | $83,400 |
| Were there any nonexempt tranactions with any party-in-interest | 2022-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2022-12-31 | $-10,639,154 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-12-31 | $79,734,013 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $412,075,021 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $1,227,497,535 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $347,046,998 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $1,317,010,255 |
| Other income not declared elsewhere | 2022-12-31 | $91,252,788 |
| Administrative expenses (other) incurred | 2022-12-31 | $11,768,692 |
| Total non interest bearing cash at end of year | 2022-12-31 | $25,035,875 |
| Total non interest bearing cash at beginning of year | 2022-12-31 | $2,123,539 |
| Value of net income/loss | 2022-12-31 | $-417,907,625 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $5,930,970,340 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $6,630,839,671 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2022-12-31 | $4,249,389,061 |
| Assets. partnership/joint venture interests at beginning of year | 2022-12-31 | $4,189,809,801 |
| Investment advisory and management fees | 2022-12-31 | $10,849,234 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2022-12-31 | $192,311,141 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2022-12-31 | $305,717,108 |
| Interest earned on other investments | 2022-12-31 | $16,058,452 |
| Income. Interest from US Government securities | 2022-12-31 | $2,372,285 |
| Income. Interest from corporate debt instruments | 2022-12-31 | $3,244,172 |
| Value of interest in common/collective trusts at end of year | 2022-12-31 | $687,055,215 |
| Value of interest in common/collective trusts at beginning of year | 2022-12-31 | $1,034,757,601 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-12-31 | $341,573,825 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2022-12-31 | $496,053,966 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2022-12-31 | $496,053,966 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $679,672 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2022-12-31 | $107,233,935 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2022-12-31 | $141,541,941 |
| Asset value of US Government securities at end of year | 2022-12-31 | $92,276,445 |
| Asset value of US Government securities at beginning of year | 2022-12-31 | $159,982,642 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2022-12-31 | $-21,780,363 |
| Net investment gain or loss from common/collective trusts | 2022-12-31 | $-203,990,614 |
| Net gain/loss from 103.12 investment entities | 2022-12-31 | $-19,308,006 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2022-12-31 | Yes |
| Income. Dividends from common stock | 2022-12-31 | $1,456,863 |
| Asset. Corporate debt instrument preferred debt at end of year | 2022-12-31 | $27,758,142 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2022-12-31 | $39,712,565 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-12-31 | $38,155,916 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-12-31 | $77,600,541 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2022-12-31 | $115,791,916 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2022-12-31 | $193,318,674 |
| Did the plan have assets held for investment | 2022-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2022-12-31 | $1,249,325,314 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $1,228,038,144 |
| 2021 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-12-31 | $599,898,862 |
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $599,898,862 |
| Total transfer of assets to this plan | 2021-12-31 | $177,283,632 |
| Total transfer of assets from this plan | 2021-12-31 | $378,412,239 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $1,317,010,255 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $1,489,608,577 |
| Expenses. Interest paid | 2021-12-31 | $926,818 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2021-12-31 | $926,818 |
| Total income from all sources (including contributions) | 2021-12-31 | $1,321,816,139 |
| Total loss/gain on sale of assets | 2021-12-31 | $449,230,092 |
| Total of all expenses incurred | 2021-12-31 | $13,847,494 |
| Value of total assets at end of year | 2021-12-31 | $7,947,849,926 |
| Value of total assets at beginning of year | 2021-12-31 | $7,013,608,210 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $12,920,676 |
| Total interest from all sources | 2021-12-31 | $9,058,866 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $8,175,953 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2021-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2021-12-31 | $6,599,513 |
| Administrative expenses professional fees incurred | 2021-12-31 | $113,255 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2021-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2021-12-31 | $192,342 |
| Were there any nonexempt tranactions with any party-in-interest | 2021-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2021-12-31 | $79,734,013 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-12-31 | $124,836,544 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $1,227,497,535 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $1,352,537,023 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $1,317,010,255 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $1,489,608,577 |
| Other income not declared elsewhere | 2021-12-31 | $90,586,634 |
| Administrative expenses (other) incurred | 2021-12-31 | $3,957,218 |
| Total non interest bearing cash at end of year | 2021-12-31 | $2,123,539 |
| Total non interest bearing cash at beginning of year | 2021-12-31 | $18,093,388 |
| Value of net income/loss | 2021-12-31 | $1,307,968,645 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $6,630,839,671 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $5,523,999,633 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2021-12-31 | $4,189,809,801 |
| Assets. partnership/joint venture interests at beginning of year | 2021-12-31 | $3,390,124,323 |
| Investment advisory and management fees | 2021-12-31 | $8,850,203 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2021-12-31 | $305,717,108 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2021-12-31 | $223,969,260 |
| Interest earned on other investments | 2021-12-31 | $4,157,977 |
| Income. Interest from US Government securities | 2021-12-31 | $1,253,814 |
| Income. Interest from corporate debt instruments | 2021-12-31 | $3,689,376 |
| Value of interest in common/collective trusts at end of year | 2021-12-31 | $1,034,757,601 |
| Value of interest in common/collective trusts at beginning of year | 2021-12-31 | $857,646,244 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-12-31 | $496,053,966 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-12-31 | $384,874,749 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-12-31 | $384,874,749 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $-42,301 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2021-12-31 | $141,541,941 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2021-12-31 | $118,747,098 |
| Asset value of US Government securities at end of year | 2021-12-31 | $159,982,642 |
| Asset value of US Government securities at beginning of year | 2021-12-31 | $231,898,434 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2021-12-31 | $4,950,979 |
| Net investment gain or loss from common/collective trusts | 2021-12-31 | $137,119,911 |
| Net gain/loss from 103.12 investment entities | 2021-12-31 | $22,794,842 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2021-12-31 | Yes |
| Income. Dividends from common stock | 2021-12-31 | $1,576,440 |
| Asset. Corporate debt instrument preferred debt at end of year | 2021-12-31 | $39,712,565 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2021-12-31 | $56,180,553 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-12-31 | $77,600,541 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-12-31 | $86,975,984 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2021-12-31 | $193,318,674 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2021-12-31 | $167,532,268 |
| Did the plan have assets held for investment | 2021-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2021-12-31 | $1,775,855,640 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $1,326,625,548 |
| 2020 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $102,746,891 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $102,746,891 |
| Total transfer of assets to this plan | 2020-12-31 | $229,757,904 |
| Total transfer of assets from this plan | 2020-12-31 | $343,853,745 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $1,489,608,577 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $2,181,719,248 |
| Expenses. Interest paid | 2020-12-31 | $52,458 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2020-12-31 | $52,458 |
| Total income from all sources (including contributions) | 2020-12-31 | $546,464,322 |
| Total loss/gain on sale of assets | 2020-12-31 | $243,285,032 |
| Total of all expenses incurred | 2020-12-31 | $11,683,505 |
| Value of total assets at end of year | 2020-12-31 | $7,013,608,210 |
| Value of total assets at beginning of year | 2020-12-31 | $7,285,033,905 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $11,631,047 |
| Total interest from all sources | 2020-12-31 | $12,953,851 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $8,837,035 |
| 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 | $7,381,474 |
| Administrative expenses professional fees incurred | 2020-12-31 | $136,145 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2020-12-31 | $192,342 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2020-12-31 | $642,669 |
| 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 | $124,836,544 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $2,375,392 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $1,352,537,023 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $2,112,239,660 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $1,489,608,577 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $2,181,719,248 |
| Other income not declared elsewhere | 2020-12-31 | $46,717,740 |
| Administrative expenses (other) incurred | 2020-12-31 | $4,164,907 |
| Total non interest bearing cash at end of year | 2020-12-31 | $18,093,388 |
| Total non interest bearing cash at beginning of year | 2020-12-31 | $-5,323,303 |
| Value of net income/loss | 2020-12-31 | $534,780,817 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $5,523,999,633 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $5,103,314,657 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2020-12-31 | $3,390,124,323 |
| Assets. partnership/joint venture interests at beginning of year | 2020-12-31 | $3,018,940,420 |
| Investment advisory and management fees | 2020-12-31 | $7,329,995 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2020-12-31 | $223,969,260 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2020-12-31 | $163,555,824 |
| Interest earned on other investments | 2020-12-31 | $6,065,762 |
| Income. Interest from US Government securities | 2020-12-31 | $2,446,029 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $4,511,759 |
| Value of interest in common/collective trusts at end of year | 2020-12-31 | $857,646,244 |
| Value of interest in common/collective trusts at beginning of year | 2020-12-31 | $879,099,982 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $384,874,749 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $267,786,444 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $267,786,444 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $-69,699 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2020-12-31 | $118,747,098 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2020-12-31 | $164,496,317 |
| Asset value of US Government securities at end of year | 2020-12-31 | $231,898,434 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $392,320,136 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2020-12-31 | $8,194,353 |
| Net investment gain or loss from common/collective trusts | 2020-12-31 | $124,478,639 |
| Net gain/loss from 103.12 investment entities | 2020-12-31 | $-749,219 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2020-12-31 | Yes |
| Income. Dividends from common stock | 2020-12-31 | $1,455,561 |
| Asset. Corporate debt instrument preferred debt at end of year | 2020-12-31 | $56,180,553 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2020-12-31 | $53,475,844 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $86,975,984 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $78,329,093 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2020-12-31 | $167,532,268 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2020-12-31 | $157,095,427 |
| Did the plan have assets held for investment | 2020-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2020-12-31 | $2,618,923,220 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $2,375,638,188 |
| 2019 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $26,741,514 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $26,741,514 |
| Total transfer of assets to this plan | 2019-12-31 | $101,147,670 |
| Total transfer of assets from this plan | 2019-12-31 | $301,985,527 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $2,181,719,248 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $2,286,762,516 |
| Expenses. Interest paid | 2019-12-31 | $650,738 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2019-12-31 | $650,738 |
| Total income from all sources (including contributions) | 2019-12-31 | $619,527,280 |
| Total loss/gain on sale of assets | 2019-12-31 | $266,823,511 |
| Total of all expenses incurred | 2019-12-31 | $12,742,794 |
| Value of total assets at end of year | 2019-12-31 | $7,285,033,905 |
| Value of total assets at beginning of year | 2019-12-31 | $6,984,130,544 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $12,092,056 |
| Total interest from all sources | 2019-12-31 | $17,795,472 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $5,537,874 |
| 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 | $2,463,062 |
| Administrative expenses professional fees incurred | 2019-12-31 | $115,971 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2019-12-31 | $642,669 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2019-12-31 | $822,829 |
| 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 | $2,375,392 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $-23,023,546 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $2,112,239,660 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $2,251,832,123 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $2,181,719,248 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $2,286,762,516 |
| Other income not declared elsewhere | 2019-12-31 | $65,576,599 |
| Administrative expenses (other) incurred | 2019-12-31 | $3,722,929 |
| Total non interest bearing cash at end of year | 2019-12-31 | $-5,323,303 |
| Total non interest bearing cash at beginning of year | 2019-12-31 | $2,067,786 |
| Value of net income/loss | 2019-12-31 | $606,784,486 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $5,103,314,657 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $4,697,368,028 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2019-12-31 | $3,018,940,420 |
| Assets. partnership/joint venture interests at beginning of year | 2019-12-31 | $2,901,038,324 |
| Investment advisory and management fees | 2019-12-31 | $8,253,156 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $163,555,824 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2019-12-31 | $38,997,967 |
| Interest earned on other investments | 2019-12-31 | $8,964,728 |
| Income. Interest from US Government securities | 2019-12-31 | $4,946,379 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $3,854,616 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $879,099,982 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $938,539,964 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $267,786,444 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $214,785,494 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $214,785,494 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $29,749 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $164,496,317 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2019-12-31 | $158,573,125 |
| Asset value of US Government securities at end of year | 2019-12-31 | $392,320,136 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $206,131,802 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $4,257,310 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $200,204,773 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $32,590,227 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2019-12-31 | Yes |
| Income. Dividends from common stock | 2019-12-31 | $3,074,812 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $53,475,844 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $31,726,602 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $78,329,093 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $59,608,570 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $157,095,427 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $203,029,504 |
| Did the plan have assets held for investment | 2019-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2019-12-31 | $2,091,954,626 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $1,825,131,115 |
| 2018 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-20,672,156 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-20,672,156 |
| Total transfer of assets to this plan | 2018-12-31 | $176,042,651 |
| Total transfer of assets from this plan | 2018-12-31 | $277,560,999 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $2,286,762,516 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $160,740,054 |
| Expenses. Interest paid | 2018-12-31 | $1,253,674 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2018-12-31 | $1,253,674 |
| Total income from all sources (including contributions) | 2018-12-31 | $-54,294,900 |
| Total loss/gain on sale of assets | 2018-12-31 | $92,722,102 |
| Total of all expenses incurred | 2018-12-31 | $15,609,101 |
| Value of total assets at end of year | 2018-12-31 | $6,984,130,544 |
| Value of total assets at beginning of year | 2018-12-31 | $5,029,530,431 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $14,355,427 |
| Total income from rents | 2018-12-31 | $99,492 |
| Total interest from all sources | 2018-12-31 | $12,134,414 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $3,798,190 |
| 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 | $822,894 |
| Administrative expenses professional fees incurred | 2018-12-31 | $124,497 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2018-12-31 | $822,829 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2018-12-31 | $2,599,262 |
| 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 | $-23,023,546 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $128,550,131 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $2,251,832,123 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $93,176,895 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $2,286,762,516 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $160,740,054 |
| Other income not declared elsewhere | 2018-12-31 | $34,130,863 |
| Administrative expenses (other) incurred | 2018-12-31 | $5,588,800 |
| Total non interest bearing cash at end of year | 2018-12-31 | $2,067,786 |
| Total non interest bearing cash at beginning of year | 2018-12-31 | $17,340,880 |
| Value of net income/loss | 2018-12-31 | $-69,904,001 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $4,697,368,028 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $4,868,790,377 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2018-12-31 | $2,901,038,324 |
| Assets. partnership/joint venture interests at beginning of year | 2018-12-31 | $2,526,697,648 |
| Investment advisory and management fees | 2018-12-31 | $8,642,130 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2018-12-31 | $38,997,967 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2018-12-31 | $46,487,473 |
| Interest earned on other investments | 2018-12-31 | $4,644,729 |
| Income. Interest from US Government securities | 2018-12-31 | $3,229,622 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $4,254,215 |
| Value of interest in common/collective trusts at end of year | 2018-12-31 | $938,539,964 |
| Value of interest in common/collective trusts at beginning of year | 2018-12-31 | $1,173,907,923 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $214,785,494 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $189,208,389 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $189,208,389 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $5,848 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2018-12-31 | $158,573,125 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2018-12-31 | $304,022,577 |
| Asset value of US Government securities at end of year | 2018-12-31 | $206,131,802 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $196,491,970 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2018-12-31 | $-5,728,613 |
| Net investment gain or loss from common/collective trusts | 2018-12-31 | $-136,040,219 |
| Net gain/loss from 103.12 investment entities | 2018-12-31 | $-34,738,973 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2018-12-31 | Yes |
| Income. Dividends from preferred stock | 2018-12-31 | $49,616 |
| Income. Dividends from common stock | 2018-12-31 | $2,925,680 |
| Asset. Corporate debt instrument preferred debt at end of year | 2018-12-31 | $31,726,602 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2018-12-31 | $21,957,188 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $59,608,570 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $56,300,837 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2018-12-31 | $203,029,504 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2018-12-31 | $272,789,258 |
| Did the plan have assets held for investment | 2018-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2018-12-31 | $1,302,718,171 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $1,209,996,069 |
| 2017 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $124,739,447 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $124,739,447 |
| Total transfer of assets to this plan | 2017-12-31 | $208,698,227 |
| Total transfer of assets from this plan | 2017-12-31 | $249,879,352 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $160,740,054 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $130,410,820 |
| Total income from all sources (including contributions) | 2017-12-31 | $637,355,182 |
| Total loss/gain on sale of assets | 2017-12-31 | $157,046,375 |
| Total of all expenses incurred | 2017-12-31 | $10,355,501 |
| Value of total assets at end of year | 2017-12-31 | $5,029,530,431 |
| Value of total assets at beginning of year | 2017-12-31 | $4,413,382,641 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $10,355,501 |
| Total interest from all sources | 2017-12-31 | $10,214,733 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $4,826,001 |
| 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 | $610,129 |
| Administrative expenses professional fees incurred | 2017-12-31 | $152,320 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2017-12-31 | $2,599,262 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2017-12-31 | $3,713,683 |
| 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 | $128,550,131 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $7,054,746 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $93,176,895 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $96,311,790 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $160,740,054 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $130,410,820 |
| Other income not declared elsewhere | 2017-12-31 | $37,544,006 |
| Administrative expenses (other) incurred | 2017-12-31 | $2,747,010 |
| Total non interest bearing cash at end of year | 2017-12-31 | $17,340,880 |
| Total non interest bearing cash at beginning of year | 2017-12-31 | $10,032,378 |
| Value of net income/loss | 2017-12-31 | $626,999,681 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $4,868,790,377 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $4,282,971,821 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2017-12-31 | $2,526,697,648 |
| Assets. partnership/joint venture interests at beginning of year | 2017-12-31 | $2,383,670,364 |
| Investment advisory and management fees | 2017-12-31 | $7,456,171 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2017-12-31 | $46,487,473 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2017-12-31 | $33,241,790 |
| Interest earned on other investments | 2017-12-31 | $2,573,316 |
| Income. Interest from US Government securities | 2017-12-31 | $1,996,963 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $5,602,848 |
| Value of interest in common/collective trusts at end of year | 2017-12-31 | $1,173,907,923 |
| Value of interest in common/collective trusts at beginning of year | 2017-12-31 | $922,645,310 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $189,208,389 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $135,136,711 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $135,136,711 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $41,606 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2017-12-31 | $304,022,577 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2017-12-31 | $228,371,670 |
| Asset value of US Government securities at end of year | 2017-12-31 | $196,491,970 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $168,451,262 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-12-31 | $455,439 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $256,751,778 |
| Net gain/loss from 103.12 investment entities | 2017-12-31 | $45,777,403 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2017-12-31 | Yes |
| Income. Dividends from preferred stock | 2017-12-31 | $16,531 |
| Income. Dividends from common stock | 2017-12-31 | $4,199,341 |
| Asset. Corporate debt instrument preferred debt at end of year | 2017-12-31 | $21,957,188 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2017-12-31 | $28,533,215 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $56,300,837 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $72,923,643 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2017-12-31 | $272,789,258 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2017-12-31 | $323,296,079 |
| Did the plan have assets held for investment | 2017-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2017-12-31 | $1,295,500,471 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $1,138,454,096 |
| 2016 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $79,121,135 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $79,121,135 |
| Total transfer of assets to this plan | 2016-12-31 | $128,633,005 |
| Total transfer of assets from this plan | 2016-12-31 | $247,593,904 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $130,410,820 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $187,519,646 |
| Total income from all sources (including contributions) | 2016-12-31 | $325,418,158 |
| Total loss/gain on sale of assets | 2016-12-31 | $179,207,432 |
| Total of all expenses incurred | 2016-12-31 | $11,690,772 |
| Value of total assets at end of year | 2016-12-31 | $4,413,382,641 |
| Value of total assets at beginning of year | 2016-12-31 | $4,275,724,980 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $11,690,772 |
| Total interest from all sources | 2016-12-31 | $9,317,743 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $6,603,539 |
| 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 | $1,300,512 |
| Administrative expenses professional fees incurred | 2016-12-31 | $93,916 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2016-12-31 | $3,713,683 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2016-12-31 | $4,561,904 |
| 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 | $7,054,746 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $75,437,615 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $96,311,790 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $144,491,016 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $130,410,820 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $187,519,646 |
| Other income not declared elsewhere | 2016-12-31 | $50,571,304 |
| Administrative expenses (other) incurred | 2016-12-31 | $4,323,250 |
| Total non interest bearing cash at end of year | 2016-12-31 | $10,032,378 |
| Total non interest bearing cash at beginning of year | 2016-12-31 | $0 |
| Value of net income/loss | 2016-12-31 | $313,727,386 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $4,282,971,821 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $4,088,205,334 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2016-12-31 | $2,383,670,364 |
| Assets. partnership/joint venture interests at beginning of year | 2016-12-31 | $2,056,331,600 |
| Investment advisory and management fees | 2016-12-31 | $7,273,606 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2016-12-31 | $33,241,790 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2016-12-31 | $51,580,812 |
| Interest earned on other investments | 2016-12-31 | $1,450,143 |
| Income. Interest from US Government securities | 2016-12-31 | $1,558,179 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $6,149,216 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $922,645,310 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $962,358,524 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $135,136,711 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $127,217,888 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $127,217,888 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $160,205 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2016-12-31 | $228,371,670 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2016-12-31 | $218,901,541 |
| Asset value of US Government securities at end of year | 2016-12-31 | $168,451,262 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $202,741,265 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2016-12-31 | $652,512 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $-9,629,312 |
| Net gain/loss from 103.12 investment entities | 2016-12-31 | $9,573,805 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2016-12-31 | Yes |
| Income. Dividends from preferred stock | 2016-12-31 | $23,981 |
| Income. Dividends from common stock | 2016-12-31 | $5,279,046 |
| Asset. Corporate debt instrument preferred debt at end of year | 2016-12-31 | $28,533,215 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2016-12-31 | $34,466,938 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $72,923,643 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $63,819,488 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2016-12-31 | $323,296,079 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2016-12-31 | $333,816,389 |
| Did the plan have assets held for investment | 2016-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2016-12-31 | $2,004,981,794 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $1,825,774,362 |
| 2015 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-8,101,429 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-8,101,429 |
| Total transfer of assets to this plan | 2015-12-31 | $157,088,161 |
| Total transfer of assets from this plan | 2015-12-31 | $402,525,694 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $187,519,646 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $93,915,032 |
| Expenses. Interest paid | 2015-12-31 | $-202,631 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2015-12-31 | $-202,631 |
| Total income from all sources (including contributions) | 2015-12-31 | $33,085,618 |
| Total loss/gain on sale of assets | 2015-12-31 | $163,918,229 |
| Total of all expenses incurred | 2015-12-31 | $10,162,775 |
| Value of total assets at end of year | 2015-12-31 | $4,275,724,980 |
| Value of total assets at beginning of year | 2015-12-31 | $4,404,635,056 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $10,365,406 |
| Total interest from all sources | 2015-12-31 | $9,951,451 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $6,845,821 |
| 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 | $1,568,279 |
| Administrative expenses professional fees incurred | 2015-12-31 | $82,483 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2015-12-31 | $4,561,904 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2015-12-31 | $6,839,927 |
| 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 | $75,437,615 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $308,868,875 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $144,491,016 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $63,401,825 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $187,519,646 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $93,915,032 |
| Other income not declared elsewhere | 2015-12-31 | $17,071,062 |
| Administrative expenses (other) incurred | 2015-12-31 | $2,347,706 |
| Value of net income/loss | 2015-12-31 | $22,922,843 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $4,088,205,334 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $4,310,720,024 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2015-12-31 | $2,056,331,600 |
| Assets. partnership/joint venture interests at beginning of year | 2015-12-31 | $1,847,019,281 |
| Investment advisory and management fees | 2015-12-31 | $7,935,217 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2015-12-31 | $51,580,812 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2015-12-31 | $59,741,546 |
| Interest earned on other investments | 2015-12-31 | $1,579,904 |
| Income. Interest from US Government securities | 2015-12-31 | $1,843,636 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $6,486,292 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $962,358,524 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $1,056,609,592 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $127,217,888 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $263,402,563 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $263,402,563 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $41,619 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2015-12-31 | $218,901,541 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2015-12-31 | $194,076,155 |
| Asset value of US Government securities at end of year | 2015-12-31 | $202,741,265 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $107,052,462 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2015-12-31 | $-2,887,875 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $-171,131,291 |
| Net gain/loss from 103.12 investment entities | 2015-12-31 | $17,419,650 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2015-12-31 | Yes |
| Income. Dividends from preferred stock | 2015-12-31 | $174,674 |
| Income. Dividends from common stock | 2015-12-31 | $5,102,868 |
| Asset. Corporate debt instrument preferred debt at end of year | 2015-12-31 | $34,466,938 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2015-12-31 | $27,549,418 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $63,819,488 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $51,760,609 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2015-12-31 | $333,816,389 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2015-12-31 | $418,312,803 |
| Did the plan have assets held for investment | 2015-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2015-12-31 | $2,033,531,760 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $1,869,613,531 |
| 2014 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $77,250,088 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $77,250,088 |
| Total transfer of assets to this plan | 2014-12-31 | $187,625,365 |
| Total transfer of assets from this plan | 2014-12-31 | $223,838,226 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $93,915,032 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $64,743,418 |
| Total income from all sources (including contributions) | 2014-12-31 | $219,205,678 |
| Total loss/gain on sale of assets | 2014-12-31 | $86,696,210 |
| Total of all expenses incurred | 2014-12-31 | $8,583,327 |
| Value of total assets at end of year | 2014-12-31 | $4,404,635,056 |
| Value of total assets at beginning of year | 2014-12-31 | $4,201,053,952 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $8,583,327 |
| Total interest from all sources | 2014-12-31 | $12,031,175 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $6,036,306 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2014-12-31 | $748,366 |
| Administrative expenses professional fees incurred | 2014-12-31 | $344,154 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2014-12-31 | $6,839,927 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2014-12-31 | $5,207,893 |
| 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 | $308,868,875 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $40,550,010 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $63,401,825 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $132,188,657 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $93,915,032 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $64,743,418 |
| Other income not declared elsewhere | 2014-12-31 | $13,445,154 |
| Administrative expenses (other) incurred | 2014-12-31 | $1,710,958 |
| Value of net income/loss | 2014-12-31 | $210,622,351 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $4,310,720,024 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $4,136,310,534 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2014-12-31 | $1,847,019,281 |
| Assets. partnership/joint venture interests at beginning of year | 2014-12-31 | $1,716,271,709 |
| Investment advisory and management fees | 2014-12-31 | $6,528,215 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2014-12-31 | $59,741,546 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2014-12-31 | $93,059,425 |
| Interest earned on other investments | 2014-12-31 | $3,350,230 |
| Income. Interest from US Government securities | 2014-12-31 | $4,580,274 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $4,090,302 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $1,056,609,592 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $1,303,307,168 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $263,402,563 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $148,036,620 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $148,036,620 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $10,369 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2014-12-31 | $194,076,155 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2014-12-31 | $79,645,214 |
| Asset value of US Government securities at end of year | 2014-12-31 | $107,052,462 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $248,795,161 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2014-12-31 | $-5,113,224 |
| Net investment gain or loss from common/collective trusts | 2014-12-31 | $32,637,780 |
| Net gain/loss from 103.12 investment entities | 2014-12-31 | $-3,777,811 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2014-12-31 | Yes |
| Income. Dividends from preferred stock | 2014-12-31 | $229,681 |
| Income. Dividends from common stock | 2014-12-31 | $5,058,259 |
| Asset. Corporate debt instrument preferred debt at end of year | 2014-12-31 | $27,549,418 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2014-12-31 | $44,575,944 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $51,760,609 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $63,954,316 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2014-12-31 | $418,312,803 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2014-12-31 | $325,461,835 |
| Did the plan have assets held for investment | 2014-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2014-12-31 | $1,900,281,633 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $1,813,585,423 |
| 2013 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $80,717,733 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $80,717,733 |
| Total transfer of assets to this plan | 2013-12-31 | $1,466,770,533 |
| Total transfer of assets from this plan | 2013-12-31 | $233,889,994 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $64,743,418 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $118,641,927 |
| Expenses. Interest paid | 2013-12-31 | $357,658 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2013-12-31 | $357,658 |
| Total income from all sources (including contributions) | 2013-12-31 | $539,568,588 |
| Total loss/gain on sale of assets | 2013-12-31 | $143,024,658 |
| Total of all expenses incurred | 2013-12-31 | $6,446,121 |
| Value of total assets at end of year | 2013-12-31 | $4,201,053,952 |
| Value of total assets at beginning of year | 2013-12-31 | $2,488,949,455 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $6,088,463 |
| Total interest from all sources | 2013-12-31 | $9,518,906 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $7,145,074 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2013-12-31 | $3,486,129 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2013-12-31 | $5,207,893 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2013-12-31 | $3,720,000 |
| 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 | $40,550,010 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $68,176,552 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $132,188,657 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $70,051,242 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $64,743,418 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $118,641,927 |
| Other income not declared elsewhere | 2013-12-31 | $24,226,471 |
| Administrative expenses (other) incurred | 2013-12-31 | $627,192 |
| Value of net income/loss | 2013-12-31 | $533,122,467 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $4,136,310,534 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $2,370,307,528 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2013-12-31 | $1,716,271,709 |
| Assets. partnership/joint venture interests at beginning of year | 2013-12-31 | $1,299,163,027 |
| Investment advisory and management fees | 2013-12-31 | $5,461,271 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2013-12-31 | $93,059,425 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2013-12-31 | $77,807,076 |
| Interest earned on other investments | 2013-12-31 | $-981,631 |
| Income. Interest from US Government securities | 2013-12-31 | $3,998,897 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $6,526,384 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $1,303,307,168 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $320,792,459 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $148,036,620 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $195,977,878 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $195,977,878 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $-24,744 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2013-12-31 | $79,645,214 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2013-12-31 | $85,278,797 |
| Asset value of US Government securities at end of year | 2013-12-31 | $248,795,161 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $118,321,768 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2013-12-31 | $8,933,929 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $248,143,854 |
| Net gain/loss from 103.12 investment entities | 2013-12-31 | $17,857,963 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2013-12-31 | Yes |
| Income. Dividends from preferred stock | 2013-12-31 | $336,974 |
| Income. Dividends from common stock | 2013-12-31 | $3,321,971 |
| Asset. Corporate debt instrument preferred debt at end of year | 2013-12-31 | $44,575,944 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2013-12-31 | $17,232,812 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $63,954,316 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $33,910,950 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2013-12-31 | $325,461,835 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2013-12-31 | $198,516,894 |
| Did the plan have assets held for investment | 2013-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2013-12-31 | $1,749,120,713 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $1,606,096,055 |
| 2012 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $97,940,494 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $97,940,494 |
| Total transfer of assets to this plan | 2012-12-31 | $215,038,000 |
| Total transfer of assets from this plan | 2012-12-31 | $139,320,416 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $118,641,927 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $310,851,056 |
| Total income from all sources (including contributions) | 2012-12-31 | $295,991,171 |
| Total loss/gain on sale of assets | 2012-12-31 | $109,361,004 |
| Total of all expenses incurred | 2012-12-31 | $9,526,692 |
| Value of total assets at end of year | 2012-12-31 | $2,488,949,455 |
| Value of total assets at beginning of year | 2012-12-31 | $2,318,976,521 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $9,526,692 |
| Total interest from all sources | 2012-12-31 | $7,474,345 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $5,249,248 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2012-12-31 | $2,500,163 |
| Administrative expenses professional fees incurred | 2012-12-31 | $291,693 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2012-12-31 | $3,720,000 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2012-12-31 | $3,036,246 |
| 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 | $68,176,552 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $17,681,614 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $70,051,242 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $294,528,738 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $118,641,927 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $310,851,056 |
| Other income not declared elsewhere | 2012-12-31 | $4,700,744 |
| Administrative expenses (other) incurred | 2012-12-31 | $5,221,895 |
| Value of net income/loss | 2012-12-31 | $286,464,479 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $2,370,307,528 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $2,008,125,465 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2012-12-31 | $1,299,163,027 |
| Assets. partnership/joint venture interests at beginning of year | 2012-12-31 | $1,131,194,369 |
| Investment advisory and management fees | 2012-12-31 | $4,013,104 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2012-12-31 | $77,807,076 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2012-12-31 | $51,894,822 |
| Interest earned on other investments | 2012-12-31 | $2,024,650 |
| Income. Interest from US Government securities | 2012-12-31 | $3,027,057 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $2,400,477 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $320,792,459 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $324,652,991 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $195,977,878 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $105,137,791 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $105,137,791 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $22,161 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2012-12-31 | $85,278,797 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2012-12-31 | $19,398,178 |
| Asset value of US Government securities at end of year | 2012-12-31 | $118,321,768 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $152,010,569 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2012-12-31 | $9,182,710 |
| Net investment gain or loss from common/collective trusts | 2012-12-31 | $49,222,495 |
| Net gain/loss from 103.12 investment entities | 2012-12-31 | $12,860,131 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2012-12-31 | Yes |
| Income. Dividends from preferred stock | 2012-12-31 | $260,797 |
| Income. Dividends from common stock | 2012-12-31 | $2,488,288 |
| Asset. Corporate debt instrument preferred debt at end of year | 2012-12-31 | $17,232,812 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2012-12-31 | $26,140,468 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $33,910,950 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $24,954,832 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2012-12-31 | $198,516,894 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2012-12-31 | $168,345,903 |
| Did the plan have assets held for investment | 2012-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2012-12-31 | $1,029,271,074 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $919,910,070 |
| 2011 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $-28,027,924 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $-28,027,924 |
| Total transfer of assets to this plan | 2011-12-31 | $163,027,634 |
| Total transfer of assets from this plan | 2011-12-31 | $134,447,097 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $310,851,056 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $328,748,038 |
| Total income from all sources (including contributions) | 2011-12-31 | $26,157,496 |
| Total loss/gain on sale of assets | 2011-12-31 | $78,383,658 |
| Total of all expenses incurred | 2011-12-31 | $6,397,018 |
| Value of total assets at end of year | 2011-12-31 | $2,318,976,521 |
| Value of total assets at beginning of year | 2011-12-31 | $2,288,532,488 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $6,397,018 |
| Total interest from all sources | 2011-12-31 | $8,144,862 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $3,255,356 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2011-12-31 | $1,291,429 |
| Administrative expenses professional fees incurred | 2011-12-31 | $115,919 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2011-12-31 | $3,036,246 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2011-12-31 | $3,087,911 |
| 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 | $17,681,614 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $57,012,588 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $294,528,738 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $289,092,340 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $310,851,056 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $328,748,038 |
| Other income not declared elsewhere | 2011-12-31 | $5,809,237 |
| Administrative expenses (other) incurred | 2011-12-31 | $2,755,243 |
| Value of net income/loss | 2011-12-31 | $19,760,478 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $2,008,125,465 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $1,959,784,450 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2011-12-31 | $1,131,194,369 |
| Assets. partnership/joint venture interests at beginning of year | 2011-12-31 | $1,004,103,605 |
| Investment advisory and management fees | 2011-12-31 | $3,525,856 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2011-12-31 | $51,894,822 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2011-12-31 | $68,115,945 |
| Interest earned on other investments | 2011-12-31 | $2,672,201 |
| Income. Interest from US Government securities | 2011-12-31 | $2,652,434 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $2,868,281 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $324,652,991 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $392,667,220 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $105,137,791 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $104,162,111 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $104,162,111 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $-48,054 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2011-12-31 | $19,398,178 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2011-12-31 | $23,714,660 |
| Asset value of US Government securities at end of year | 2011-12-31 | $152,010,569 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $111,224,191 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2011-12-31 | $-6,647,238 |
| Net investment gain or loss from common/collective trusts | 2011-12-31 | $-30,443,973 |
| Net gain/loss from 103.12 investment entities | 2011-12-31 | $-4,316,482 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2011-12-31 | Yes |
| Income. Dividends from preferred stock | 2011-12-31 | $209,540 |
| Income. Dividends from common stock | 2011-12-31 | $1,754,387 |
| Asset. Corporate debt instrument preferred debt at end of year | 2011-12-31 | $26,140,468 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2011-12-31 | $27,974,808 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $24,954,832 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $23,909,183 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2011-12-31 | $168,345,903 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2011-12-31 | $183,467,926 |
| Did the plan have assets held for investment | 2011-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2011-12-31 | $1,170,449,107 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $1,092,065,449 |
| 2010 : EVERSOURCE RETIREMENT PLAN MASTER TRUST FKA NORTHEAST UTILITIES SERVICE COMPANY MASTER TRUST INVESTMENT ACCT 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $123,012,574 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $123,012,574 |
| Total transfer of assets to this plan | 2010-12-31 | $45,000,000 |
| Total transfer of assets from this plan | 2010-12-31 | $131,792,710 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $328,748,038 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $206,139,282 |
| Total income from all sources (including contributions) | 2010-12-31 | $286,242,409 |
| Total loss/gain on sale of assets | 2010-12-31 | $56,800,607 |
| Total of all expenses incurred | 2010-12-31 | $10,205,243 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2010-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2010-12-31 | $0 |
| Value of total assets at end of year | 2010-12-31 | $2,288,532,488 |
| Value of total assets at beginning of year | 2010-12-31 | $1,976,679,276 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $10,205,243 |
| Total interest from all sources | 2010-12-31 | $8,536,467 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $1,970,789 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2010-12-31 | $978,022 |
| Administrative expenses professional fees incurred | 2010-12-31 | $135,901 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2010-12-31 | $3,087,911 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2010-12-31 | $2,928,647 |
| 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 | $57,012,588 |
| Assets. Other investments not covered elsewhere at beginning of year | 2010-12-31 | $102,913,012 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $289,092,340 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $223,854,894 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $328,748,038 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $206,139,282 |
| Other income not declared elsewhere | 2010-12-31 | $32,181,096 |
| Administrative expenses (other) incurred | 2010-12-31 | $4,362,784 |
| Total non interest bearing cash at end of year | 2010-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2010-12-31 | $0 |
| Value of net income/loss | 2010-12-31 | $276,037,166 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $1,959,784,450 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $1,770,539,994 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2010-12-31 | $1,004,103,605 |
| Assets. partnership/joint venture interests at beginning of year | 2010-12-31 | $891,047,394 |
| Investment advisory and management fees | 2010-12-31 | $5,706,558 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2010-12-31 | $68,115,945 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2010-12-31 | $51,380,950 |
| Interest earned on other investments | 2010-12-31 | $2,434,295 |
| Income. Interest from US Government securities | 2010-12-31 | $3,503,792 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $2,618,426 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $392,667,220 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $183,309,860 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $104,162,111 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $8,466,440 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $8,466,440 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $-20,046 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2010-12-31 | $23,714,660 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2010-12-31 | $71,711,522 |
| Asset value of US Government securities at end of year | 2010-12-31 | $111,224,191 |
| Asset value of US Government securities at beginning of year | 2010-12-31 | $272,975,125 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2010-12-31 | $12,193,174 |
| Net investment gain or loss from common/collective trusts | 2010-12-31 | $47,931,814 |
| Net gain/loss from 103.12 investment entities | 2010-12-31 | $3,615,888 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2010-12-31 | Yes |
| Income. Dividends from preferred stock | 2010-12-31 | $178,661 |
| Income. Dividends from common stock | 2010-12-31 | $814,106 |
| Asset. Corporate debt instrument preferred debt at end of year | 2010-12-31 | $27,974,808 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2010-12-31 | $32,052,978 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $23,909,183 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2010-12-31 | $29,889,533 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2010-12-31 | $183,467,926 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2010-12-31 | $106,148,921 |
| Did the plan have assets held for investment | 2010-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2010-12-31 | $1,023,503,219 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $966,702,612 |
