BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A. has sponsored the creation of one or more 401k plans.
| Measure | Date | Value |
|---|
| 2023 : US DEBT INDEX FUND F 2023 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-12-31 | $1,384,653,376 |
| Total unrealized appreciation/depreciation of assets | 2023-12-31 | $1,384,653,376 |
| Total transfer of assets to this plan | 2023-12-31 | $13,644,195,993 |
| Total transfer of assets from this plan | 2023-12-31 | $9,232,310,405 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $109,091,303 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $75,024,070 |
| Total income from all sources (including contributions) | 2023-12-31 | $1,564,757,523 |
| Total of all expenses incurred | 2023-12-31 | $17,446 |
| Value of total assets at end of year | 2023-12-31 | $30,273,099,409 |
| Value of total assets at beginning of year | 2023-12-31 | $24,262,406,511 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-12-31 | $17,446 |
| Total interest from all sources | 2023-12-31 | $173 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2023-12-31 | No |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-12-31 | $109,085,448 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-12-31 | $75,016,833 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-12-31 | $109,091,303 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-12-31 | $75,024,070 |
| Administrative expenses (other) incurred | 2023-12-31 | $2,202 |
| Value of net income/loss | 2023-12-31 | $1,564,740,077 |
| Value of net assets at end of year (total assets less liabilities) | 2023-12-31 | $30,164,008,106 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-12-31 | $24,187,382,441 |
| Investment advisory and management fees | 2023-12-31 | $11,379 |
| Value of interest in common/collective trusts at end of year | 2023-12-31 | $30,164,013,727 |
| Value of interest in common/collective trusts at beginning of year | 2023-12-31 | $24,187,389,505 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2023-12-31 | $234 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2023-12-31 | $173 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2023-12-31 | $173 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-12-31 | $173 |
| Net investment gain or loss from common/collective trusts | 2023-12-31 | $180,103,974 |
| Aggregate proceeds on sale of assets | 2023-12-31 | $73,137 |
| Aggregate carrying amount (costs) on sale of assets | 2023-12-31 | $73,137 |
| 2022 : US DEBT INDEX FUND F 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-535,711,626 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-535,711,626 |
| Total transfer of assets to this plan | 2022-12-31 | $5,983,902,290 |
| Total transfer of assets from this plan | 2022-12-31 | $6,162,439,660 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $75,024,070 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $278,446,959 |
| Total income from all sources (including contributions) | 2022-12-31 | $-3,619,249,894 |
| Total of all expenses incurred | 2022-12-31 | $14,613 |
| Value of total assets at end of year | 2022-12-31 | $24,262,406,511 |
| Value of total assets at beginning of year | 2022-12-31 | $28,263,631,277 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $14,613 |
| Total interest from all sources | 2022-12-31 | $14 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2022-12-31 | No |
| Administrative expenses professional fees incurred | 2022-12-31 | $3,783 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $75,016,833 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $278,438,990 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $75,024,070 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $278,446,959 |
| Administrative expenses (other) incurred | 2022-12-31 | $3,300 |
| Value of net income/loss | 2022-12-31 | $-3,619,264,507 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $24,187,382,441 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $27,985,184,318 |
| Investment advisory and management fees | 2022-12-31 | $7,530 |
| Value of interest in common/collective trusts at end of year | 2022-12-31 | $24,187,389,505 |
| Value of interest in common/collective trusts at beginning of year | 2022-12-31 | $27,985,191,287 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-12-31 | $173 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2022-12-31 | $1,000 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2022-12-31 | $1,000 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $14 |
| Net investment gain or loss from common/collective trusts | 2022-12-31 | $-3,083,538,282 |
| Aggregate proceeds on sale of assets | 2022-12-31 | $25,718 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $25,718 |
| 2021 : US DEBT INDEX FUND F 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-12-31 | $-1,196,546,876 |
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $-1,196,546,876 |
| Total transfer of assets to this plan | 2021-12-31 | $11,138,947,831 |
| Total transfer of assets from this plan | 2021-12-31 | $10,076,410,688 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $278,446,959 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $304,505,718 |
| Total income from all sources (including contributions) | 2021-12-31 | $-423,595,266 |
| Total of all expenses incurred | 2021-12-31 | $13,706 |
| Value of total assets at end of year | 2021-12-31 | $28,263,631,277 |
| Value of total assets at beginning of year | 2021-12-31 | $27,650,761,865 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $13,706 |
| Total interest from all sources | 2021-12-31 | $4 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2021-12-31 | No |
| Administrative expenses professional fees incurred | 2021-12-31 | $3,393 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $278,438,990 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $304,499,707 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $278,446,959 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $304,505,718 |
| Administrative expenses (other) incurred | 2021-12-31 | $3,300 |
| Value of net income/loss | 2021-12-31 | $-423,608,972 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $27,985,184,318 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $27,346,256,147 |
| Investment advisory and management fees | 2021-12-31 | $7,013 |
| Value of interest in common/collective trusts at end of year | 2021-12-31 | $27,985,191,287 |
| Value of interest in common/collective trusts at beginning of year | 2021-12-31 | $27,346,261,681 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-12-31 | $1,000 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-12-31 | $477 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-12-31 | $477 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $4 |
| Net investment gain or loss from common/collective trusts | 2021-12-31 | $772,951,606 |
| Aggregate proceeds on sale of assets | 2021-12-31 | $28,079 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $28,079 |
| 2020 : US DEBT INDEX FUND F 2020 401k financial data |
|---|
| Total transfer of assets to this plan | 2020-12-31 | $12,775,233,456 |
| Total transfer of assets from this plan | 2020-12-31 | $9,961,498,071 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $304,505,718 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $129,831,512 |
| Total income from all sources (including contributions) | 2020-12-31 | $1,768,258,822 |
| Total of all expenses incurred | 2020-12-31 | $14,843 |
| Value of total assets at end of year | 2020-12-31 | $27,650,761,865 |
| Value of total assets at beginning of year | 2020-12-31 | $22,894,108,295 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $14,843 |
| Total interest from all sources | 2020-12-31 | $2,310 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2020-12-31 | No |
| Administrative expenses professional fees incurred | 2020-12-31 | $4,170 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $304,499,707 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $129,825,124 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $304,505,718 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $129,831,512 |
| Administrative expenses (other) incurred | 2020-12-31 | $3,038 |
| Value of net income/loss | 2020-12-31 | $1,768,243,979 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $27,346,256,147 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $22,764,276,783 |
| Investment advisory and management fees | 2020-12-31 | $7,635 |
| Value of interest in common/collective trusts at end of year | 2020-12-31 | $27,346,261,681 |
| Value of interest in common/collective trusts at beginning of year | 2020-12-31 | $22,764,282,171 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $477 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $1,000 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $1,000 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $2,310 |
| Net investment gain or loss from common/collective trusts | 2020-12-31 | $1,768,256,512 |
| Aggregate proceeds on sale of assets | 2020-12-31 | $173,050,207 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $173,050,207 |
| 2019 : US DEBT INDEX FUND F 2019 401k financial data |
|---|
| Total transfer of assets to this plan | 2019-12-31 | $7,451,913,782 |
| Total transfer of assets from this plan | 2019-12-31 | $3,356,462,395 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $129,831,512 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $685,364,500 |
| Total income from all sources (including contributions) | 2019-12-31 | $1,647,937,552 |
| Total of all expenses incurred | 2019-12-31 | $41,972 |
| Value of total assets at end of year | 2019-12-31 | $22,894,108,295 |
| Value of total assets at beginning of year | 2019-12-31 | $17,706,294,316 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $41,972 |
| Total interest from all sources | 2019-12-31 | $21,408 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2019-12-31 | No |
| Administrative expenses professional fees incurred | 2019-12-31 | $3,727 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $129,825,124 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $685,367,385 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $129,831,512 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $685,364,500 |
| Value of net income/loss | 2019-12-31 | $1,647,895,580 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $22,764,276,783 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $17,020,929,816 |
| Investment advisory and management fees | 2019-12-31 | $38,245 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $22,764,282,171 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $17,020,926,398 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $1,000 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $533 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $533 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $21,408 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $1,647,916,144 |
| 2018 : US DEBT INDEX FUND F 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-175,730,019 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-175,730,019 |
| Total transfer of assets to this plan | 2018-12-31 | $10,394,402,055 |
| Total transfer of assets from this plan | 2018-12-31 | $7,805,239,587 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $685,364,500 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $187,840,602 |
| Total income from all sources (including contributions) | 2018-12-31 | $50,340,222 |
| Total loss/gain on sale of assets | 2018-12-31 | $-49,818,655 |
| Total of all expenses incurred | 2018-12-31 | $9,669 |
| 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 | $17,706,294,316 |
| Value of total assets at beginning of year | 2018-12-31 | $14,569,277,397 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $9,669 |
| Total interest from all sources | 2018-12-31 | $6,150 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $0 |
| Administrative expenses professional fees incurred | 2018-12-31 | $3,762 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $685,367,385 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $187,893,992 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $685,364,500 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $187,840,602 |
| Value of net income/loss | 2018-12-31 | $50,330,553 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $17,020,929,816 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $14,381,436,795 |
| Investment advisory and management fees | 2018-12-31 | $5,907 |
| Value of interest in common/collective trusts at end of year | 2018-12-31 | $17,020,926,398 |
| Value of interest in common/collective trusts at beginning of year | 2018-12-31 | $14,381,350,382 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $533 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $33,023 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $33,023 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $6,150 |
| Net investment gain or loss from common/collective trusts | 2018-12-31 | $275,882,746 |
| Aggregate proceeds on sale of assets | 2018-12-31 | $1,958,445,127 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $2,008,263,782 |
| 2017 : US DEBT INDEX FUND F 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $171,418,411 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $171,418,411 |
| Total transfer of assets to this plan | 2017-12-31 | $5,904,143,575 |
| Total transfer of assets from this plan | 2017-12-31 | $3,884,155,331 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $187,840,602 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $239,497,101 |
| Total income from all sources (including contributions) | 2017-12-31 | $478,244,345 |
| Total loss/gain on sale of assets | 2017-12-31 | $-26,343,005 |
| Total of all expenses incurred | 2017-12-31 | $9,625 |
| 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 | $14,569,277,397 |
| Value of total assets at beginning of year | 2017-12-31 | $12,122,710,932 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $9,625 |
| Total interest from all sources | 2017-12-31 | $18 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $0 |
| Administrative expenses professional fees incurred | 2017-12-31 | $3,765 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $187,893,992 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $239,496,643 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $187,840,602 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $239,497,101 |
| Value of net income/loss | 2017-12-31 | $478,234,720 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $14,381,436,795 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $11,883,213,831 |
| Investment advisory and management fees | 2017-12-31 | $5,860 |
| Value of interest in common/collective trusts at end of year | 2017-12-31 | $14,381,350,382 |
| Value of interest in common/collective trusts at beginning of year | 2017-12-31 | $11,883,213,756 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $33,023 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $533 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $533 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $18 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $333,168,921 |
| Aggregate proceeds on sale of assets | 2017-12-31 | $1,216,939,882 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $1,243,282,887 |
| 2016 : US DEBT INDEX FUND F 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $8,888,924 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $8,888,924 |
| Total transfer of assets to this plan | 2016-12-31 | $5,743,796,707 |
| Total transfer of assets from this plan | 2016-12-31 | $4,528,325,919 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $239,497,101 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $18,647,902 |
| Total income from all sources (including contributions) | 2016-12-31 | $275,589,172 |
| Total loss/gain on sale of assets | 2016-12-31 | $-32,152,576 |
| Total of all expenses incurred | 2016-12-31 | $9,768 |
| 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 | $12,122,710,932 |
| Value of total assets at beginning of year | 2016-12-31 | $10,410,811,541 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $9,768 |
| Total interest from all sources | 2016-12-31 | $5 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $0 |
| Administrative expenses professional fees incurred | 2016-12-31 | $3,910 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $239,496,643 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $18,644,210 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $239,497,101 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $18,647,902 |
| Value of net income/loss | 2016-12-31 | $275,579,404 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $11,883,213,831 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $10,392,163,639 |
| Investment advisory and management fees | 2016-12-31 | $5,858 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $11,883,213,756 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $10,392,167,023 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $533 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $308 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $308 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $5 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $298,852,819 |
| Aggregate proceeds on sale of assets | 2016-12-31 | $1,779,362,404 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $1,811,514,980 |
| 2015 : US DEBT INDEX FUND F 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-154,353,105 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-154,353,105 |
| Total transfer of assets to this plan | 2015-12-31 | $5,027,071,479 |
| Total transfer of assets from this plan | 2015-12-31 | $3,332,203,104 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $18,647,902 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $25,300,336 |
| Total income from all sources (including contributions) | 2015-12-31 | $46,904,025 |
| Total loss/gain on sale of assets | 2015-12-31 | $-28,657,668 |
| Total of all expenses incurred | 2015-12-31 | $9,743 |
| 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 | $10,410,811,541 |
| Value of total assets at beginning of year | 2015-12-31 | $8,675,701,318 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $9,743 |
| Total interest from all sources | 2015-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $0 |
| Administrative expenses professional fees incurred | 2015-12-31 | $3,910 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $18,644,210 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $25,296,002 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $18,647,902 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $25,300,336 |
| Value of net income/loss | 2015-12-31 | $46,894,282 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $10,392,163,639 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $8,650,400,982 |
| Investment advisory and management fees | 2015-12-31 | $5,833 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $10,392,167,023 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $8,650,404,783 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $308 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $533 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $533 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $229,914,798 |
| Aggregate proceeds on sale of assets | 2015-12-31 | $1,780,806,816 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $1,809,464,484 |
| 2014 : US DEBT INDEX FUND F 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $294,432,242 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $294,432,242 |
| Total transfer of assets to this plan | 2014-12-31 | $3,367,845,194 |
| Total transfer of assets from this plan | 2014-12-31 | $2,476,256,765 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $25,300,336 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $100,282,234 |
| Total income from all sources (including contributions) | 2014-12-31 | $467,712,079 |
| Total loss/gain on sale of assets | 2014-12-31 | $-64,175,442 |
| Total of all expenses incurred | 2014-12-31 | $9,706 |
| 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 | $8,675,701,318 |
| Value of total assets at beginning of year | 2014-12-31 | $7,391,392,414 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $9,706 |
| Total interest from all sources | 2014-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $0 |
| Administrative expenses professional fees incurred | 2014-12-31 | $3,860 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $25,296,002 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $100,277,659 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $25,300,336 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $100,282,234 |
| Value of net income/loss | 2014-12-31 | $467,702,373 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $8,650,400,982 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $7,291,110,180 |
| Investment advisory and management fees | 2014-12-31 | $5,846 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $8,650,404,783 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $7,291,114,222 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $533 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $533 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $533 |
| Net investment gain or loss from common/collective trusts | 2014-12-31 | $237,455,279 |
| Aggregate proceeds on sale of assets | 2014-12-31 | $1,566,989,752 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $1,631,165,194 |
| 2013 : US DEBT INDEX FUND F 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $-293,948,312 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $-293,948,312 |
| Total transfer of assets to this plan | 2013-12-31 | $2,382,773,456 |
| Total transfer of assets from this plan | 2013-12-31 | $2,814,144,068 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $100,282,234 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $50,227,004 |
| Total income from all sources (including contributions) | 2013-12-31 | $-148,945,689 |
| Total loss/gain on sale of assets | 2013-12-31 | $-21,579,142 |
| Total of all expenses incurred | 2013-12-31 | $9,938 |
| 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 | $7,391,392,414 |
| Value of total assets at beginning of year | 2013-12-31 | $7,921,663,423 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $9,938 |
| Total interest from all sources | 2013-12-31 | $24 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $0 |
| Administrative expenses professional fees incurred | 2013-12-31 | $4,100 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $100,277,659 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $50,222,529 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $100,282,234 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $50,227,004 |
| Value of net income/loss | 2013-12-31 | $-148,955,627 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $7,291,110,180 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $7,871,436,419 |
| Investment advisory and management fees | 2013-12-31 | $5,838 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $7,291,114,222 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $7,871,439,895 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $533 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $999 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $999 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $24 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $166,581,741 |
| Aggregate proceeds on sale of assets | 2013-12-31 | $1,398,118,702 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $1,419,697,844 |
| 2012 : US DEBT INDEX FUND F 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $-6,910,115 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $-6,910,115 |
| Total transfer of assets to this plan | 2012-12-31 | $3,161,221,748 |
| Total transfer of assets from this plan | 2012-12-31 | $1,434,657,147 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $50,227,004 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $43,460,177 |
| Total income from all sources (including contributions) | 2012-12-31 | $280,794,914 |
| Total loss/gain on sale of assets | 2012-12-31 | $12,572,382 |
| Total of all expenses incurred | 2012-12-31 | $9,891 |
| 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 | $7,921,663,423 |
| Value of total assets at beginning of year | 2012-12-31 | $5,907,546,972 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $9,891 |
| Total interest from all sources | 2012-12-31 | $400 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $0 |
| Administrative expenses professional fees incurred | 2012-12-31 | $4,000 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $50,222,529 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $43,454,751 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $50,227,004 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $43,460,177 |
| Value of net income/loss | 2012-12-31 | $280,785,023 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $7,871,436,419 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $5,864,086,795 |
| Investment advisory and management fees | 2012-12-31 | $5,891 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $7,871,439,895 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $5,864,091,285 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $999 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $936 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $936 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $400 |
| Net investment gain or loss from common/collective trusts | 2012-12-31 | $275,132,247 |
| Aggregate proceeds on sale of assets | 2012-12-31 | $586,829,309 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $574,256,927 |
| 2011 : US DEBT INDEX FUND F 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $-53,362,977 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $-53,362,977 |
| Total transfer of assets to this plan | 2011-12-31 | $2,894,984,161 |
| Total transfer of assets from this plan | 2011-12-31 | $1,507,456,202 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $43,460,177 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $236,785,785 |
| Total income from all sources (including contributions) | 2011-12-31 | $374,619,850 |
| Total loss/gain on sale of assets | 2011-12-31 | $25,347,354 |
| Total of all expenses incurred | 2011-12-31 | $10,810 |
| 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 | $5,907,546,972 |
| Value of total assets at beginning of year | 2011-12-31 | $4,338,735,581 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $10,810 |
| Total interest from all sources | 2011-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $0 |
| Administrative expenses professional fees incurred | 2011-12-31 | $4,975 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $43,454,751 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $236,780,628 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $43,460,177 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $236,785,785 |
| Value of net income/loss | 2011-12-31 | $374,609,040 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $5,864,086,795 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $4,101,949,796 |
| Investment advisory and management fees | 2011-12-31 | $5,835 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $5,864,091,285 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $4,101,954,766 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $936 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $187 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $187 |
| Net investment gain or loss from common/collective trusts | 2011-12-31 | $402,635,473 |
| Aggregate proceeds on sale of assets | 2011-12-31 | $655,068,444 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $629,721,090 |
| 2010 : US DEBT INDEX FUND F 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $-56,098,275 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $-56,098,275 |
| Total transfer of assets to this plan | 2010-12-31 | $2,386,016,647 |
| Total transfer of assets from this plan | 2010-12-31 | $865,635,164 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $236,785,785 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $5,774 |
| Total income from all sources (including contributions) | 2010-12-31 | $184,361,677 |
| Total loss/gain on sale of assets | 2010-12-31 | $24,235,350 |
| Total of all expenses incurred | 2010-12-31 | $10,800 |
| 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 | $4,338,735,581 |
| Value of total assets at beginning of year | 2010-12-31 | $2,397,223,210 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $10,800 |
| Total interest from all sources | 2010-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $0 |
| Administrative expenses professional fees incurred | 2010-12-31 | $4,975 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $236,780,628 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $236,785,785 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $5,774 |
| Value of net income/loss | 2010-12-31 | $184,350,877 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $4,101,949,796 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $2,397,217,436 |
| Investment advisory and management fees | 2010-12-31 | $5,825 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $4,101,954,766 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $2,397,222,565 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $187 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $645 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $645 |
| Net investment gain or loss from common/collective trusts | 2010-12-31 | $216,224,602 |
| Aggregate proceeds on sale of assets | 2010-12-31 | $357,503,828 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $333,268,478 |
