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Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance beginning of period | $ 10,919 | $ 18,072 | $ 13,052
OCI before reclassifications | (51,451) | (9,272) | 7,602
Deferred income tax benefit (expense) | 11,338 | 1,837 | (1,664)
AOCI before reclassifications, net of income tax | (29,194) | 10,637 | 18,990
Amounts reclassified from AOCI | 2,198 | 216 | (1,287)
Deferred income tax benefit (expense) | (463) | (27) | 421
Amounts reclassified from AOCI, net of income tax | 1,735 | 189 | (866)
Balance end of period | (27,083) | 10,919 | 18,072
Unrealized Investment Gains (Losses), Net of Related Offsets |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance beginning of period | 16,042 | 22,217 | 18,283
OCI before reclassifications | (49,427) | (7,829) | 5,775
Deferred income tax benefit (expense) | 11,304 | 1,918 | (1,349)
AOCI before reclassifications, net of income tax | (22,081) | 16,306 | 22,709
Amounts reclassified from AOCI | 1,607 | (125) | (357)
Deferred income tax benefit (expense) | (368) | 29 | 83
Amounts reclassified from AOCI, net of income tax | 1,239 | (96) | (274)
Balance end of period | (20,851) | 16,042 | 22,217
Unrealized Gains (Losses) on Derivatives |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance beginning of period | 1,629 | 1,513 | 1,698
OCI before reclassifications | (583) | (113) | 730
Deferred income tax benefit (expense) | 89 | 18 | (257)
AOCI before reclassifications, net of income tax | 1,135 | 1,418 | 2,171
Amounts reclassified from AOCI | 498 | 250 | (1,016)
Deferred income tax benefit (expense) | (76) | (39) | 358
Amounts reclassified from AOCI, net of income tax | 422 | 211 | (658)
Balance end of period | 1,557 | 1,629 | 1,513
Foreign Currency Translation Adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance beginning of period | (5,154) | (3,795) | (4,927)
OCI before reclassifications | (1,629) | (1,567) | 1,002
Deferred income tax benefit (expense) | (16) | (53) | (36)
AOCI before reclassifications, net of income tax | (6,799) | (5,415) | (3,961)
Amounts reclassified from AOCI | 0 | 0 | 0
Deferred income tax benefit (expense) | 0 | 0 | 0
Amounts reclassified from AOCI, net of income tax | 0 | 0 | 0
Balance end of period | (6,412) | (5,154) | (3,795)
Defined Benefit Plans Adjustment |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Balance beginning of period | (1,598) | (1,863) | (2,002)
OCI before reclassifications | 188 | 237 | 95
Deferred income tax benefit (expense) | (39) | (46) | (22)
AOCI before reclassifications, net of income tax | (1,449) | (1,672) | (1,929)
Amounts reclassified from AOCI | 93 | 91 | 86
Deferred income tax benefit (expense) | (19) | (17) | (20)
Amounts reclassified from AOCI, net of income tax | 74 | 74 | 66
Balance end of period | (1,377) | (1,598) | (1,863)
Disposal Group, Held-for-Sale or Disposed of by Sale |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Amounts reclassified from AOCI, net of income tax | 376 | 93 | (52)
Disposal Group, Held-for-Sale or Disposed of by Sale | Unrealized Investment Gains (Losses), Net of Related Offsets |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Amounts reclassified from AOCI, net of income tax | (9) | (168) | (218)
Disposal Group, Held-for-Sale or Disposed of by Sale | Unrealized Gains (Losses) on Derivatives |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Amounts reclassified from AOCI, net of income tax | 0 | 0 | 0
Disposal Group, Held-for-Sale or Disposed of by Sale | Foreign Currency Translation Adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Amounts reclassified from AOCI, net of income tax | 387 | 261 | 166
Disposal Group, Held-for-Sale or Disposed of by Sale | Defined Benefit Plans Adjustment |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Amounts reclassified from AOCI, net of income tax | $ (2) | $ 0 | $ 0

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