STATE STREET GLOBAL ADVISORS TRUST COMPANY has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C
401k plan membership statisitcs for SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C
| Measure | Date | Value |
|---|
| 2023 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2023 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-12-31 | $89,033 |
| Total unrealized appreciation/depreciation of assets | 2023-12-31 | $89,033 |
| Total transfer of assets to this plan | 2023-12-31 | $1,050,435 |
| Total transfer of assets from this plan | 2023-12-31 | $1,155,738 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $9,291 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $8,381 |
| Total income from all sources (including contributions) | 2023-12-31 | $25,014 |
| Total loss/gain on sale of assets | 2023-12-31 | $-68,211 |
| Total of all expenses incurred | 2023-12-31 | $53 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2023-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2023-12-31 | $0 |
| Value of total assets at end of year | 2023-12-31 | $683,833 |
| Value of total assets at beginning of year | 2023-12-31 | $763,265 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-12-31 | $53 |
| Total interest from all sources | 2023-12-31 | $23,629 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2023-12-31 | $19,176 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-12-31 | $23,049 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-12-31 | $11,157 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-12-31 | $9,166 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-12-31 | $9,291 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-12-31 | $8,381 |
| Administrative expenses (other) incurred | 2023-12-31 | $-397 |
| Value of net income/loss | 2023-12-31 | $24,961 |
| Value of net assets at end of year (total assets less liabilities) | 2023-12-31 | $674,542 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-12-31 | $754,884 |
| Investment advisory and management fees | 2023-12-31 | $328 |
| Interest earned on other investments | 2023-12-31 | $996 |
| Income. Interest from US Government securities | 2023-12-31 | $10,844 |
| Income. Interest from corporate debt instruments | 2023-12-31 | $11,454 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2023-12-31 | $13,834 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2023-12-31 | $17,974 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2023-12-31 | $17,974 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-12-31 | $335 |
| Asset value of US Government securities at end of year | 2023-12-31 | $391,803 |
| Asset value of US Government securities at beginning of year | 2023-12-31 | $433,651 |
| Net investment gain or loss from common/collective trusts | 2023-12-31 | $-19,437 |
| Asset. Corporate debt instrument preferred debt at end of year | 2023-12-31 | $139,999 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2023-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-12-31 | $107,864 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-12-31 | $279,425 |
| Contract administrator fees | 2023-12-31 | $77 |
| Aggregate proceeds on sale of assets | 2023-12-31 | $625,559 |
| Aggregate carrying amount (costs) on sale of assets | 2023-12-31 | $693,770 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-01-01 | $89,033 |
| Total unrealized appreciation/depreciation of assets | 2023-01-01 | $89,033 |
| Total transfer of assets to this plan | 2023-01-01 | $1,050,435 |
| Total transfer of assets from this plan | 2023-01-01 | $1,155,738 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-01-01 | $9,291 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-01-01 | $8,381 |
| Total income from all sources (including contributions) | 2023-01-01 | $25,014 |
| Total loss/gain on sale of assets | 2023-01-01 | $-68,211 |
| Total of all expenses incurred | 2023-01-01 | $53 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2023-01-01 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2023-01-01 | $0 |
| Value of total assets at end of year | 2023-01-01 | $683,833 |
| Value of total assets at beginning of year | 2023-01-01 | $763,265 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-01-01 | $53 |
| Total interest from all sources | 2023-01-01 | $23,629 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-01-01 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2023-01-01 | $19,176 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-01-01 | $23,049 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-01-01 | $11,157 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-01-01 | $9,166 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-01-01 | $9,291 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-01-01 | $8,381 |
| Administrative expenses (other) incurred | 2023-01-01 | $-397 |
| Value of net income/loss | 2023-01-01 | $24,961 |
| Value of net assets at end of year (total assets less liabilities) | 2023-01-01 | $674,542 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-01-01 | $754,884 |
| Investment advisory and management fees | 2023-01-01 | $328 |
| Interest earned on other investments | 2023-01-01 | $996 |
| Income. Interest from US Government securities | 2023-01-01 | $10,844 |
| Income. Interest from corporate debt instruments | 2023-01-01 | $11,454 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2023-01-01 | $13,834 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-01-01 | $335 |
| Asset value of US Government securities at end of year | 2023-01-01 | $391,803 |
| Asset value of US Government securities at beginning of year | 2023-01-01 | $433,651 |
| Net investment gain or loss from common/collective trusts | 2023-01-01 | $-19,437 |
| Asset. Corporate debt instrument preferred debt at end of year | 2023-01-01 | $139,999 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2023-01-01 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-01-01 | $107,864 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-01-01 | $279,425 |
| Contract administrator fees | 2023-01-01 | $77 |
| Aggregate proceeds on sale of assets | 2023-01-01 | $625,559 |
| Aggregate carrying amount (costs) on sale of assets | 2023-01-01 | $693,770 |
| 2022 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-340,676 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-340,676 |
| Total transfer of assets to this plan | 2022-12-31 | $210,885 |
| Total transfer of assets from this plan | 2022-12-31 | $312,421 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $8,381 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $2,558 |
| Total income from all sources (including contributions) | 2022-12-31 | $-133,483 |
| Total loss/gain on sale of assets | 2022-12-31 | $124,069 |
| Total of all expenses incurred | 2022-12-31 | $436 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-12-31 | $0 |
| 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 | $763,265 |
| Value of total assets at beginning of year | 2022-12-31 | $992,897 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $436 |
| Total interest from all sources | 2022-12-31 | $83,124 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $0 |
| Administrative expenses professional fees incurred | 2022-12-31 | $32 |
| Assets. Other investments not covered elsewhere at end of year | 2022-12-31 | $23,049 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-12-31 | $34,087 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $9,166 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $7,654 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $8,381 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $2,558 |
| Administrative expenses (other) incurred | 2022-12-31 | $402 |
| Value of net income/loss | 2022-12-31 | $-133,919 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $754,884 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $990,339 |
| Investment advisory and management fees | 2022-12-31 | $2 |
| Interest earned on other investments | 2022-12-31 | $6 |
| Income. Interest from US Government securities | 2022-12-31 | $37,893 |
| Income. Interest from corporate debt instruments | 2022-12-31 | $45,005 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-12-31 | $17,974 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2022-12-31 | $5,748 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2022-12-31 | $5,748 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $220 |
| Asset value of US Government securities at end of year | 2022-12-31 | $433,651 |
| Asset value of US Government securities at beginning of year | 2022-12-31 | $548,926 |
| Asset. Corporate debt instrument preferred debt at end of year | 2022-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2022-12-31 | $204,200 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-12-31 | $279,425 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-12-31 | $192,282 |
| Aggregate proceeds on sale of assets | 2022-12-31 | $6,136,803 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $6,012,734 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-01-01 | $-340,676 |
| Total unrealized appreciation/depreciation of assets | 2022-01-01 | $-340,676 |
| Total transfer of assets to this plan | 2022-01-01 | $210,885 |
| Total transfer of assets from this plan | 2022-01-01 | $312,421 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-01-01 | $8,381 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-01-01 | $2,558 |
| Total income from all sources (including contributions) | 2022-01-01 | $-133,483 |
| Total loss/gain on sale of assets | 2022-01-01 | $124,069 |
| Total of all expenses incurred | 2022-01-01 | $436 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-01-01 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2022-01-01 | $0 |
| Value of total assets at end of year | 2022-01-01 | $763,265 |
| Value of total assets at beginning of year | 2022-01-01 | $992,897 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-01-01 | $436 |
| Total interest from all sources | 2022-01-01 | $83,124 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-01-01 | $0 |
| Administrative expenses professional fees incurred | 2022-01-01 | $32 |
| Assets. Other investments not covered elsewhere at end of year | 2022-01-01 | $23,049 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-01-01 | $34,087 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-01-01 | $9,166 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-01-01 | $7,654 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-01-01 | $8,381 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-01-01 | $2,558 |
| Administrative expenses (other) incurred | 2022-01-01 | $402 |
| Value of net income/loss | 2022-01-01 | $-133,919 |
| Value of net assets at end of year (total assets less liabilities) | 2022-01-01 | $754,884 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-01-01 | $990,339 |
| Investment advisory and management fees | 2022-01-01 | $2 |
| Interest earned on other investments | 2022-01-01 | $6 |
| Income. Interest from US Government securities | 2022-01-01 | $37,893 |
| Income. Interest from corporate debt instruments | 2022-01-01 | $45,005 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-01-01 | $17,974 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-01-01 | $220 |
| Asset value of US Government securities at end of year | 2022-01-01 | $433,651 |
| Asset value of US Government securities at beginning of year | 2022-01-01 | $548,926 |
| Asset. Corporate debt instrument preferred debt at end of year | 2022-01-01 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2022-01-01 | $204,200 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-01-01 | $279,425 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-01-01 | $192,282 |
| Aggregate proceeds on sale of assets | 2022-01-01 | $6,136,803 |
| Aggregate carrying amount (costs) on sale of assets | 2022-01-01 | $6,012,734 |
| 2021 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2021 401k financial data |
|---|
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $0 |
| Total transfer of assets to this plan | 2021-12-31 | $598,671 |
| Total transfer of assets from this plan | 2021-12-31 | $770,614 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $2,558 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $7,136 |
| Total income from all sources (including contributions) | 2021-12-31 | $-16,868 |
| Total loss/gain on sale of assets | 2021-12-31 | $-3,818 |
| Total of all expenses incurred | 2021-12-31 | $570 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2021-12-31 | $0 |
| 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 | $992,897 |
| Value of total assets at beginning of year | 2021-12-31 | $1,186,856 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $570 |
| Total interest from all sources | 2021-12-31 | $19,373 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $0 |
| Administrative expenses professional fees incurred | 2021-12-31 | $16 |
| Assets. Other investments not covered elsewhere at end of year | 2021-12-31 | $34,087 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-12-31 | $43,068 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $7,654 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $12,701 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $2,558 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $7,136 |
| Administrative expenses (other) incurred | 2021-12-31 | $95 |
| Value of net income/loss | 2021-12-31 | $-17,438 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $990,339 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $1,179,720 |
| Investment advisory and management fees | 2021-12-31 | $459 |
| Income. Interest from loans (other than to participants) | 2021-12-31 | $0 |
| Interest earned on other investments | 2021-12-31 | $995 |
| Income. Interest from US Government securities | 2021-12-31 | $7,629 |
| Income. Interest from corporate debt instruments | 2021-12-31 | $10,738 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-12-31 | $5,748 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-12-31 | $25,534 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-12-31 | $25,534 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $11 |
| Asset value of US Government securities at end of year | 2021-12-31 | $548,926 |
| Asset value of US Government securities at beginning of year | 2021-12-31 | $600,321 |
| Net investment gain or loss from common/collective trusts | 2021-12-31 | $-32,423 |
| Asset. Corporate debt instrument preferred debt at end of year | 2021-12-31 | $204,200 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2021-12-31 | $276,500 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-12-31 | $192,282 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-12-31 | $228,732 |
| Contract administrator fees | 2021-12-31 | $0 |
| Aggregate proceeds on sale of assets | 2021-12-31 | $217,210 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $221,028 |
| 2020 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $-4,548 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $-4,548 |
| Total transfer of assets to this plan | 2020-12-31 | $1,337,922 |
| Total transfer of assets from this plan | 2020-12-31 | $161,358 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $7,136 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $0 |
| Total income from all sources (including contributions) | 2020-12-31 | $3,299 |
| Total loss/gain on sale of assets | 2020-12-31 | $2,606 |
| Total of all expenses incurred | 2020-12-31 | $143 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2020-12-31 | $0 |
| 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 | $1,186,856 |
| Value of total assets at beginning of year | 2020-12-31 | $0 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $143 |
| Total interest from all sources | 2020-12-31 | $5,241 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $0 |
| Administrative expenses professional fees incurred | 2020-12-31 | $5 |
| Assets. Other investments not covered elsewhere at end of year | 2020-12-31 | $43,068 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $12,701 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $7,136 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $0 |
| Administrative expenses (other) incurred | 2020-12-31 | $23 |
| Value of net income/loss | 2020-12-31 | $3,156 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $1,179,720 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $0 |
| Investment advisory and management fees | 2020-12-31 | $115 |
| Interest earned on other investments | 2020-12-31 | $245 |
| Income. Interest from US Government securities | 2020-12-31 | $2,223 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $2,761 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $25,534 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $0 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $12 |
| Asset value of US Government securities at end of year | 2020-12-31 | $600,321 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at end of year | 2020-12-31 | $276,500 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2020-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $228,732 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $0 |
| Aggregate proceeds on sale of assets | 2020-12-31 | $116,726 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $114,120 |
| 2019 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $12,663,897 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $12,663,897 |
| Total transfer of assets to this plan | 2019-12-31 | $13,813,591 |
| Total transfer of assets from this plan | 2019-12-31 | $197,334,968 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $1,791,260 |
| Total income from all sources (including contributions) | 2019-12-31 | $16,854,720 |
| Total loss/gain on sale of assets | 2019-12-31 | $449,202 |
| Total of all expenses incurred | 2019-12-31 | $82,264 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2019-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $0 |
| Value of total assets at end of year | 2019-12-31 | $0 |
| Value of total assets at beginning of year | 2019-12-31 | $168,540,181 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $82,264 |
| Total interest from all sources | 2019-12-31 | $3,741,621 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $0 |
| Administrative expenses professional fees incurred | 2019-12-31 | $2,607 |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $5,317,873 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $2,526,301 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $1,791,260 |
| Administrative expenses (other) incurred | 2019-12-31 | $13,315 |
| Value of net income/loss | 2019-12-31 | $16,772,456 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $0 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $166,748,921 |
| Investment advisory and management fees | 2019-12-31 | $66,342 |
| Interest earned on other investments | 2019-12-31 | $154,445 |
| Income. Interest from US Government securities | 2019-12-31 | $1,736,554 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $1,838,476 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $0 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $744,733 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $744,733 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $12,146 |
| Asset value of US Government securities at end of year | 2019-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $96,106,786 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $34,437,416 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $29,407,072 |
| Aggregate proceeds on sale of assets | 2019-12-31 | $26,700,204 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $26,251,002 |
| 2018 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-4,925,864 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-4,925,864 |
| Total transfer of assets to this plan | 2018-12-31 | $26,694,953 |
| Total transfer of assets from this plan | 2018-12-31 | $40,389,480 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $1,791,260 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $1,106,570 |
| Total income from all sources (including contributions) | 2018-12-31 | $-1,038,759 |
| Total loss/gain on sale of assets | 2018-12-31 | $-885,213 |
| Total of all expenses incurred | 2018-12-31 | $104,680 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2018-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2018-12-31 | $0 |
| Value of total assets at end of year | 2018-12-31 | $168,540,181 |
| Value of total assets at beginning of year | 2018-12-31 | $182,693,457 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $104,680 |
| Total interest from all sources | 2018-12-31 | $4,772,318 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $0 |
| Administrative expenses professional fees incurred | 2018-12-31 | $4,183 |
| Assets. Other investments not covered elsewhere at end of year | 2018-12-31 | $5,317,873 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $6,431,753 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $2,526,301 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $2,213,230 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $1,791,260 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $1,106,570 |
| Administrative expenses (other) incurred | 2018-12-31 | $16,078 |
| Total non interest bearing cash at end of year | 2018-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2018-12-31 | $6,669 |
| Value of net income/loss | 2018-12-31 | $-1,143,439 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $166,748,921 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $181,586,887 |
| Investment advisory and management fees | 2018-12-31 | $84,419 |
| Interest earned on other investments | 2018-12-31 | $220,890 |
| Income. Interest from US Government securities | 2018-12-31 | $2,090,921 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $2,455,335 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $744,733 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $605,358 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $605,358 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $5,172 |
| Asset value of US Government securities at end of year | 2018-12-31 | $96,106,786 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $99,995,269 |
| Asset. Corporate debt instrument preferred debt at end of year | 2018-12-31 | $34,437,416 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2018-12-31 | $39,311,180 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $29,407,072 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $34,129,998 |
| Aggregate proceeds on sale of assets | 2018-12-31 | $46,096,629 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $46,981,842 |
| 2017 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $2,218,501 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $2,218,501 |
| Total transfer of assets to this plan | 2017-12-31 | $26,275,717 |
| Total transfer of assets from this plan | 2017-12-31 | $20,177,747 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $1,106,570 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $206,490 |
| Total income from all sources (including contributions) | 2017-12-31 | $6,971,201 |
| Total loss/gain on sale of assets | 2017-12-31 | $144,704 |
| Total of all expenses incurred | 2017-12-31 | $108,448 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2017-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2017-12-31 | $0 |
| Value of total assets at end of year | 2017-12-31 | $182,693,457 |
| Value of total assets at beginning of year | 2017-12-31 | $168,832,654 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $108,448 |
| Total interest from all sources | 2017-12-31 | $4,607,996 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $0 |
| Administrative expenses professional fees incurred | 2017-12-31 | $4,634 |
| Assets. Other investments not covered elsewhere at end of year | 2017-12-31 | $6,431,753 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $5,836,413 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $2,213,230 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $1,700,594 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $1,106,570 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $206,490 |
| Administrative expenses (other) incurred | 2017-12-31 | $16,357 |
| Total non interest bearing cash at end of year | 2017-12-31 | $6,669 |
| Total non interest bearing cash at beginning of year | 2017-12-31 | $126 |
| Value of net income/loss | 2017-12-31 | $6,862,753 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $181,586,887 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $168,626,164 |
| Investment advisory and management fees | 2017-12-31 | $87,457 |
| Interest earned on other investments | 2017-12-31 | $218,556 |
| Income. Interest from US Government securities | 2017-12-31 | $1,890,732 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $2,490,226 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $605,358 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $520,650 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $520,650 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $8,482 |
| Asset value of US Government securities at end of year | 2017-12-31 | $99,995,269 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $90,076,321 |
| Asset. Corporate debt instrument preferred debt at end of year | 2017-12-31 | $39,311,180 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2017-12-31 | $39,272,614 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $34,129,998 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $31,425,936 |
| Aggregate proceeds on sale of assets | 2017-12-31 | $45,508,979 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $45,364,275 |
| 2016 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $862,367 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $862,367 |
| Total transfer of assets to this plan | 2016-12-31 | $19,710,231 |
| Total transfer of assets from this plan | 2016-12-31 | $29,360,323 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $206,490 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $1,481,628 |
| Total income from all sources (including contributions) | 2016-12-31 | $5,509,455 |
| Total loss/gain on sale of assets | 2016-12-31 | $145,797 |
| Total of all expenses incurred | 2016-12-31 | $109,789 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2016-12-31 | $0 |
| 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 | $168,832,654 |
| Value of total assets at beginning of year | 2016-12-31 | $174,358,218 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $109,789 |
| Total interest from all sources | 2016-12-31 | $4,501,291 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $0 |
| Administrative expenses professional fees incurred | 2016-12-31 | $6,732 |
| Assets. Other investments not covered elsewhere at end of year | 2016-12-31 | $5,836,413 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $6,910,917 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $1,700,594 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $2,159,861 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $206,490 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $1,481,628 |
| Administrative expenses (other) incurred | 2016-12-31 | $14,517 |
| Total non interest bearing cash at end of year | 2016-12-31 | $126 |
| Total non interest bearing cash at beginning of year | 2016-12-31 | $0 |
| Value of net income/loss | 2016-12-31 | $5,399,666 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $168,626,164 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $172,876,590 |
| Investment advisory and management fees | 2016-12-31 | $88,540 |
| Interest earned on other investments | 2016-12-31 | $255,449 |
| Income. Interest from US Government securities | 2016-12-31 | $1,793,500 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $2,447,263 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $520,650 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $3,004,777 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $3,004,777 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $5,079 |
| Asset value of US Government securities at end of year | 2016-12-31 | $90,076,321 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $95,060,523 |
| Asset. Corporate debt instrument preferred debt at end of year | 2016-12-31 | $39,272,614 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2016-12-31 | $37,188,379 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $31,425,936 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $30,033,761 |
| Aggregate proceeds on sale of assets | 2016-12-31 | $37,377,735 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $37,231,938 |
| 2015 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-3,589,334 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-3,589,334 |
| Total transfer of assets to this plan | 2015-12-31 | $19,045,743 |
| Total transfer of assets from this plan | 2015-12-31 | $26,526,349 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $1,481,628 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $1,950,687 |
| Total income from all sources (including contributions) | 2015-12-31 | $416,408 |
| Total loss/gain on sale of assets | 2015-12-31 | $-379,258 |
| Total of all expenses incurred | 2015-12-31 | $117,441 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2015-12-31 | $0 |
| 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 | $174,358,218 |
| Value of total assets at beginning of year | 2015-12-31 | $182,008,916 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $117,441 |
| Total interest from all sources | 2015-12-31 | $4,385,000 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $0 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2015-12-31 | $0 |
| Administrative expenses professional fees incurred | 2015-12-31 | $7,372 |
| Assets. Other investments not covered elsewhere at end of year | 2015-12-31 | $6,910,917 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $7,798,117 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $2,159,861 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $1,777,029 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $1,481,628 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $1,950,687 |
| Administrative expenses (other) incurred | 2015-12-31 | $21,709 |
| Total non interest bearing cash at end of year | 2015-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2015-12-31 | $0 |
| Value of net income/loss | 2015-12-31 | $298,967 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $172,876,590 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $180,058,229 |
| Investment advisory and management fees | 2015-12-31 | $88,360 |
| Interest earned on other investments | 2015-12-31 | $316,106 |
| Income. Interest from US Government securities | 2015-12-31 | $1,718,908 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $2,348,882 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $3,004,777 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $702,148 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $702,148 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $1,104 |
| Asset value of US Government securities at end of year | 2015-12-31 | $95,060,523 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $102,938,944 |
| Income. Dividends from preferred stock | 2015-12-31 | $0 |
| Income. Dividends from common stock | 2015-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at end of year | 2015-12-31 | $37,188,379 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2015-12-31 | $42,229,741 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $30,033,761 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $26,562,937 |
| Aggregate proceeds on sale of assets | 2015-12-31 | $44,263,036 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $44,642,294 |
| 2014 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $5,461,064 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $5,461,064 |
| Total transfer of assets to this plan | 2014-12-31 | $40,597,675 |
| Total transfer of assets from this plan | 2014-12-31 | $18,616,817 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $1,950,687 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $6,101,244 |
| Total income from all sources (including contributions) | 2014-12-31 | $9,383,470 |
| Total loss/gain on sale of assets | 2014-12-31 | $9,777 |
| Total of all expenses incurred | 2014-12-31 | $110,102 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2014-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2014-12-31 | $0 |
| Value of total assets at end of year | 2014-12-31 | $182,008,916 |
| Value of total assets at beginning of year | 2014-12-31 | $154,905,247 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $110,102 |
| Total interest from all sources | 2014-12-31 | $3,912,629 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $0 |
| Administrative expenses professional fees incurred | 2014-12-31 | $7,461 |
| Assets. Other investments not covered elsewhere at end of year | 2014-12-31 | $7,798,117 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $6,254,682 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $1,777,029 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $1,529,887 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $1,950,687 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $6,101,244 |
| Administrative expenses (other) incurred | 2014-12-31 | $20,432 |
| Total non interest bearing cash at end of year | 2014-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2014-12-31 | $63 |
| Value of net income/loss | 2014-12-31 | $9,273,368 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $180,058,229 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $148,804,003 |
| Investment advisory and management fees | 2014-12-31 | $82,209 |
| Interest earned on other investments | 2014-12-31 | $622 |
| Income. Interest from US Government securities | 2014-12-31 | $1,808,270 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $2,102,304 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $702,148 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $7,294,452 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $7,294,452 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $1,433 |
| Asset value of US Government securities at end of year | 2014-12-31 | $102,938,944 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $85,462,254 |
| Asset. Corporate debt instrument preferred debt at end of year | 2014-12-31 | $42,229,741 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2014-12-31 | $34,892,997 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $26,562,937 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $19,470,912 |
| Aggregate proceeds on sale of assets | 2014-12-31 | $37,195,549 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $37,185,772 |
| 2013 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $-7,195,372 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $-7,195,372 |
| Total transfer of assets to this plan | 2013-12-31 | $12,287,998 |
| Total transfer of assets from this plan | 2013-12-31 | $25,139,103 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $6,101,244 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $2,725,850 |
| Total income from all sources (including contributions) | 2013-12-31 | $-3,875,839 |
| Total loss/gain on sale of assets | 2013-12-31 | $-288,371 |
| Total of all expenses incurred | 2013-12-31 | $111,020 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2013-12-31 | $0 |
| 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 | $154,905,247 |
| Value of total assets at beginning of year | 2013-12-31 | $168,367,817 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $111,020 |
| Total interest from all sources | 2013-12-31 | $3,607,904 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $0 |
| Administrative expenses professional fees incurred | 2013-12-31 | $6,329 |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $6,254,682 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $6,571,067 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $1,529,887 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $2,136,317 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $6,101,244 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $2,725,850 |
| Administrative expenses (other) incurred | 2013-12-31 | $25,364 |
| Total non interest bearing cash at end of year | 2013-12-31 | $63 |
| Total non interest bearing cash at beginning of year | 2013-12-31 | $0 |
| Value of net income/loss | 2013-12-31 | $-3,986,859 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $148,804,003 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $165,641,967 |
| Investment advisory and management fees | 2013-12-31 | $79,327 |
| Interest earned on other investments | 2013-12-31 | $255,971 |
| Income. Interest from US Government securities | 2013-12-31 | $1,406,205 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $1,943,988 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $7,294,452 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $3,331,460 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $3,331,460 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $1,740 |
| Asset value of US Government securities at end of year | 2013-12-31 | $85,462,254 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $98,803,066 |
| Asset. Corporate debt instrument preferred debt at end of year | 2013-12-31 | $34,892,997 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2013-12-31 | $37,885,193 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $19,470,912 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $19,640,714 |
| Aggregate proceeds on sale of assets | 2013-12-31 | $39,720,914 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $40,009,285 |
| 2012 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $3,232,678 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $3,232,678 |
| Total transfer of assets to this plan | 2012-12-31 | $28,961,292 |
| Total transfer of assets from this plan | 2012-12-31 | $31,659,112 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $2,725,850 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $3,840,627 |
| Total income from all sources (including contributions) | 2012-12-31 | $7,493,029 |
| Total loss/gain on sale of assets | 2012-12-31 | $124,545 |
| Total of all expenses incurred | 2012-12-31 | $114,403 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2012-12-31 | $0 |
| 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 | $168,367,817 |
| Value of total assets at beginning of year | 2012-12-31 | $164,801,788 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $114,403 |
| Total interest from all sources | 2012-12-31 | $4,135,806 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $0 |
| Administrative expenses professional fees incurred | 2012-12-31 | $10,626 |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $6,571,067 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $6,488,275 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $2,136,317 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $2,457,488 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $2,725,850 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $3,840,627 |
| Administrative expenses (other) incurred | 2012-12-31 | $22,061 |
| Total non interest bearing cash at end of year | 2012-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2012-12-31 | $459 |
| Value of net income/loss | 2012-12-31 | $7,378,626 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $165,641,967 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $160,961,161 |
| Investment advisory and management fees | 2012-12-31 | $81,716 |
| Interest earned on other investments | 2012-12-31 | $261,625 |
| Income. Interest from US Government securities | 2012-12-31 | $1,761,909 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $2,105,761 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $3,331,460 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $5,618,362 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $5,618,362 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $6,511 |
| Asset value of US Government securities at end of year | 2012-12-31 | $98,803,066 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $97,871,596 |
| Asset. Corporate debt instrument preferred debt at end of year | 2012-12-31 | $37,885,193 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2012-12-31 | $34,338,394 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $19,640,714 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $18,027,214 |
| Aggregate proceeds on sale of assets | 2012-12-31 | $41,665,534 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $41,540,989 |
| 2011 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $8,019,746 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $8,019,746 |
| Total transfer of assets to this plan | 2011-12-31 | $24,634,651 |
| Total transfer of assets from this plan | 2011-12-31 | $17,179,859 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $3,840,627 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $1,758,030 |
| Total income from all sources (including contributions) | 2011-12-31 | $12,295,902 |
| Total loss/gain on sale of assets | 2011-12-31 | $35,065 |
| Total of all expenses incurred | 2011-12-31 | $104,009 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2011-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2011-12-31 | $0 |
| Value of total assets at end of year | 2011-12-31 | $164,801,788 |
| Value of total assets at beginning of year | 2011-12-31 | $143,072,506 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $104,009 |
| Total interest from all sources | 2011-12-31 | $4,241,091 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $0 |
| Administrative expenses professional fees incurred | 2011-12-31 | $12,185 |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $6,488,275 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $5,567,221 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $2,457,488 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $1,461,650 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $3,840,627 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $1,758,030 |
| Administrative expenses (other) incurred | 2011-12-31 | $17,532 |
| Total non interest bearing cash at end of year | 2011-12-31 | $459 |
| Value of net income/loss | 2011-12-31 | $12,191,893 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $160,961,161 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $141,314,476 |
| Investment advisory and management fees | 2011-12-31 | $74,292 |
| Interest earned on other investments | 2011-12-31 | $261,307 |
| Income. Interest from US Government securities | 2011-12-31 | $1,897,729 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $2,076,713 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $5,618,362 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $2,383,828 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $2,383,828 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $5,342 |
| Asset value of US Government securities at end of year | 2011-12-31 | $97,871,596 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $87,251,003 |
| Asset. Corporate debt instrument preferred debt at end of year | 2011-12-31 | $34,338,394 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2011-12-31 | $31,248,492 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $18,027,214 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $15,160,312 |
| Aggregate proceeds on sale of assets | 2011-12-31 | $34,189,593 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $34,154,528 |
| 2010 : SSGA U.S. GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS C 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $-4,248,591 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $-4,248,591 |
| Total transfer of assets to this plan | 2010-12-31 | $164,268,827 |
| Total transfer of assets from this plan | 2010-12-31 | $21,011,606 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $1,758,030 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $0 |
| Total income from all sources (including contributions) | 2010-12-31 | $-1,899,079 |
| Total loss/gain on sale of assets | 2010-12-31 | $502,777 |
| Total of all expenses incurred | 2010-12-31 | $43,666 |
| 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 | $143,072,506 |
| Value of total assets at beginning of year | 2010-12-31 | $0 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $43,666 |
| Total interest from all sources | 2010-12-31 | $1,846,735 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $0 |
| Administrative expenses professional fees incurred | 2010-12-31 | $7,254 |
| Assets. Other investments not covered elsewhere at end of year | 2010-12-31 | $5,567,221 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $1,461,650 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $1,758,030 |
| Administrative expenses (other) incurred | 2010-12-31 | $8,063 |
| Value of net income/loss | 2010-12-31 | $-1,942,745 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $141,314,476 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $0 |
| Investment advisory and management fees | 2010-12-31 | $28,349 |
| Interest earned on other investments | 2010-12-31 | $92,782 |
| Income. Interest from US Government securities | 2010-12-31 | $841,753 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $910,641 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $2,383,828 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $1,559 |
| Asset value of US Government securities at end of year | 2010-12-31 | $87,251,003 |
| Asset. Corporate debt instrument preferred debt at end of year | 2010-12-31 | $31,248,492 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $15,160,312 |
| Aggregate proceeds on sale of assets | 2010-12-31 | $31,553,581 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $31,050,804 |
