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Derivatives (Effects on the Consolidated Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | $ 3,583 | $ 5,280 | $ 7,867 | $ 10,594
Net investment gains (losses) | (685) | 1,605 | (1,203) | 1,739
Derivative, Gain (Loss) on Derivative, Net | (1,195) | 421 | (2,054) | (1,814)
Policyholder Benefits and Claims Incurred, Net | (11,790) | (9,405) | (22,983) | (19,928)
Interest credited to policyholder account balances | (492) | (1,515) | (1,122) | (2,866)
Operating Expenses | 3,083 | 2,881 | 6,103 | 6,031
Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 39 | (15) | 50 | (30)
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | (1,541) | 180 | (2,677) | (2,980)
Policyholder Benefits and Claims Incurred, Net | (159) | 95 | (211) | (243)
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Fair Value Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | (1) | 1 | 1 | 2
Net investment gains (losses) | 23 | (2) | 55 | (9)
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | (20) | (5) | (37) | (34)
Interest credited to policyholder account balances | (1) | 0 | (1) | 0
Operating Expenses | 0 | 0 | 0 | 0
Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 17 | 16 | 34 | 31
Net investment gains (losses) | 34 | 19 | 50 | 40
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 2 | 1 | 3 | 2
Other Comprehensive Income (Loss), before Tax | 475 | 697 | 275 | (571)
Net Investment Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax | 205 | 19 | 267 | 75
Nonperformance Risk [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net | 18 | (8) | 4 | (51)
Foreign Exchange Forward [Member] | Net Investment Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax |  |  |  | 46
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax | 168 | 17 | 211 |
Interest Rate Contract | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 16 | 15 | 31 | 27
Net investment gains (losses) | 42 | 19 | 60 | 48
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 1 | 0 | 2 | 1
Other Comprehensive Income (Loss), before Tax | (59) | (34) | (93) | (76)
Credit forwards [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 0 | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0 | 0 | 0
Currency Swap [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 1 | 1 | 3 | 4
Net investment gains (losses) | (690) | 95 | (838) | (124)
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 1 | 1 | 1 | 1
Other Comprehensive Income (Loss), before Tax | 688 | (97) | 834 | 119
Derivative [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 0 | 0 | 0 | 0
Net investment gains (losses) | 28 | (2) | 61 | (4)
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Derivative [Member] | Interest rate swaps | Fair Value Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 3 | 0 | 7 | 3
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 408 | (237) | 860 | 365
Interest credited to policyholder account balances | (10) | 0 | (10) | 0
Operating Expenses | 0 | 0 | 0 | 0
Derivative [Member] | Currency Swap [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 61 | (1) | 93 | 12
Net investment gains (losses) | (170) | (7) | (251) | (135)
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Debt Securities [Member] | Interest rate swaps | Fair Value Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | (4) | 1 | (8) | (2)
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 388 | (242) | 823 | 331
Interest credited to policyholder account balances | (9) | 0 | (9) | 0
Operating Expenses | 0 | 0 | 0 | 0
Debt Securities [Member] | Currency Swap [Member] | Fair Value Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | (61) | 1 | (91) | (11)
Net investment gains (losses) | 165 | 7 | 245 | 130
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Non-derivative [Domain] [Member] | Net Investment Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax | 37 | 2 | 56 | 29
Foreign Currency Gain (Loss) [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 0 | 0 | 0 | 0
Net investment gains (losses) | 682 | (95) | 828 | 116
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0 | 0 | 0
Accumulated Other Comprehensive Income (Loss) | Credit forwards [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax | 0 | (4) | 0 | (72)
Accumulated Other Comprehensive Income (Loss) | Currency Swap [Member] | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax | 749 | 322 | 1,201 | 169
Accumulated Other Comprehensive Income (Loss) | Interest rate swaps | Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), before Tax | (903) | 510 | (1,667) | (711)
Foreign Exchange [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 1 | 0 | 2 | 0
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | (664) | (123) | (738) | (606)
Policyholder Benefits and Claims Incurred, Net | (1) | 0 | (2) | 3
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Credit derivatives — purchased | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 0 | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 46 | (7) | 92 | 12
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Credit derivatives — written | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 0 | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | (195) | 30 | (245) | 35
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Equity Market Risk [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 36 | (15) | 45 | (32)
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 590 | (363) | 751 | (1,039)
Policyholder Benefits and Claims Incurred, Net | (187) | 103 | (269) | (207)
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Interest Rate Risk [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 2 | 0 | 3 | 2
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | (1,494) | 636 | (2,831) | (1,614)
Policyholder Benefits and Claims Incurred, Net | 27 | (8) | 56 | 39
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Foreign Currency Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 0 | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 176 | 7 | 294 | 232
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Interest credited to policyholder account balances | 0 | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0 | 0
Net Derivative Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 140 | 27 | 223 | 66
Net investment gains (losses) | 0 | 0 | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 249 | 245 | 484 | 497
Policyholder Benefits and Claims Incurred, Net | (46) | (52) | (98) | (105)
Interest credited to policyholder account balances | (37) | (38) | (72) | (77)
Operating Expenses | 0 | 0 | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0 | 0 | 0
Net Embedded Derivatives |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | 97 | (4) | 139 | 669
Policyholder Benefits and Claims Incurred, Net | 0 | 0 | 0 | 0
Effects of Derivatives on Consolidated Statements of Operations and Comprehensive Income (Loss) [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net investment income | 195 | 29 | 308 | 69
Net investment gains (losses) | 57 | 17 | 105 | 31
Policyholder Benefits and Claims Incurred, Net | (185) | 48 | (272) | 172
Interest credited to policyholder account balances | 38 | 38 | 73 | 77
Operating Expenses | 2 | 1 | 3 | 2
Other Comprehensive Income (Loss), before Tax | $ 680 | $ 716 | $ 542 | $ (496)

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