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Derivatives (Effects on the Consolidated Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | $ (5,436) | $ (4,645)
Net investment gains (losses) | (375) | (684)
Derivative, Gain (Loss) on Derivative, Net | (181) | (312)
Gain (Loss) on Derivative Instruments, Net, Pretax | $ 979 | $ 90
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Gain (Loss) on Derivative Instruments, Net, Pretax | Gain (Loss) on Derivative Instruments, Net, Pretax
Policyholder Benefits and Claims Incurred, Net | $ (10,074) | $ (9,872)
Interest credited to policyholder account balances | (2,290) | (1,864)
Operating Expenses | 3,217 | 3,057
Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (25) | (6)
Derivative, Gain (Loss) on Derivative, Net | 1,211 | 403
Operating Expenses | 0 | 0
Fair Value Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (2) | 0
Net investment gains (losses) | (4) | (10)
Policyholder Benefits and Claims Incurred, Net | (6) | 0
Interest credited to policyholder account balances | (3) | 0
Operating Expenses | 0 | 0
Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (9) | (15)
Net investment gains (losses) | (15) | 2
Derivative, Gain (Loss) on Derivative, Net | 0 | 0
Interest credited to policyholder account balances | 0 | 0
Operating Expenses | 0 | 1
Other Comprehensive Income (Loss), before Tax | 16 | 255
Net Investment Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment gains (losses) | 0 |
Other Comprehensive Income (Loss), before Tax | 180 | 48
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] |  |
Net investment gains (losses) | 0 |
Other Comprehensive Income (Loss), before Tax | 160 |
Interest Rate Contract | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (8) | (14)
Net investment gains (losses) | 2 | 5
Derivative, Gain (Loss) on Derivative, Net | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | 0 | 0
Operating Expenses | 0 | 0
Other Comprehensive Income (Loss), before Tax | (10) | (19)
Credit forwards [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Net investment gains (losses) | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | 0 | 0
Operating Expenses | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0
Currency Swap [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (1) | (1)
Net investment gains (losses) | (368) | 111
Derivative, Gain (Loss) on Derivative, Net | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | 0 | 0
Operating Expenses | 0 | 1
Other Comprehensive Income (Loss), before Tax | 367 | (113)
Derivative [Member] | Fair Value Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Net investment gains (losses) | 4 | (10)
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | 0 | 0
Operating Expenses | 0 | 0
Derivative [Member] | Interest rate swaps | Fair Value Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | (1)
Net investment gains (losses) | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 109 | (126)
Interest credited to policyholder account balances | (43) | (36)
Operating Expenses | 0 | 0
Derivative [Member] | Currency Swap [Member] | Fair Value Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (4) | (17)
Net investment gains (losses) | (31) | (3)
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | (24) | 0
Operating Expenses | 0 | 0
Debt Securities [Member] | Interest rate swaps | Fair Value Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | (1)
Net investment gains (losses) | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 103 | (126)
Interest credited to policyholder account balances | (42) | (36)
Operating Expenses | 0 | 0
Debt Securities [Member] | Currency Swap [Member] | Fair Value Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (2) | (17)
Net investment gains (losses) | 23 | 3
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | (28) | 0
Operating Expenses | 0 | 0
Non-derivative [Domain] [Member] | Net Investment Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Other Comprehensive Income (Loss), before Tax | 20 | 2
Foreign Currency Gain (Loss) [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Net investment gains (losses) | 351 | (114)
Derivative, Gain (Loss) on Derivative, Net | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 0 | 0
Interest credited to policyholder account balances | 0 | 0
Operating Expenses | 0 | 0
Other Comprehensive Income (Loss), before Tax | 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 | 0
Accumulated Other Comprehensive Income (Loss) | Currency Swap [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Other Comprehensive Income (Loss), before Tax | (123) | (160)
Accumulated Other Comprehensive Income (Loss) | Interest rate swaps | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Other Comprehensive Income (Loss), before Tax | (218) | 547
Foreign Exchange [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 706 | 162
Credit derivatives — purchased | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 7 | 13
Credit derivatives — written | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | (34) | (3)
Equity Market Risk [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (25) | (6)
Derivative, Gain (Loss) on Derivative, Net | 342 | 512
Interest Rate Risk [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | 353 | (158)
Foreign Currency Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | 0 | 0
Derivative, Gain (Loss) on Derivative, Net | (163) | (123)
Net Derivative Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (30) | (43)
Net investment gains (losses) | 0 | 0
Policyholder Benefits and Claims Incurred, Net | 4 | (5)
Interest credited to policyholder account balances | (49) | (33)
Other Comprehensive Income (Loss), before Tax | 0 | 0
Net Embedded Derivatives |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | 32 | (17)
Policyholder Benefits and Claims Incurred, Net |  | 0
Synthetic GICs [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (19) | (18)
Effects of Derivatives on Consolidated Statements of Operations and Comprehensive Income (Loss) [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net investment income | (16) | (52)
Net investment gains (losses) | (19) | (8)
Derivative, Gain (Loss) on Derivative, Net | 979 | 90
Policyholder Benefits and Claims Incurred, Net | 10 | (5)
Interest credited to policyholder account balances | 46 | 33
Operating Expenses | 0 | 1
Other Comprehensive Income (Loss), before Tax | $ 196 | $ 303

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