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Derivatives Derivatives (Effects on the Consolidated Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net investment income | $ (15,916,000,000) | $ (21,395,000,000) | $ (17,117,000,000)
Net investment gains (losses) | (1,262,000,000) | 1,529,000,000 | (110,000,000)
Policyholder benefits and claims | (50,612,000,000) | (43,954,000,000) | (41,461,000,000)
Gain (Loss) on Derivative Instruments, Net, Pretax | (2,372,000,000) | (2,228,000,000) | 1,349,000,000
Policyholder Account Balance, Interest Expense | (3,692,000,000) | (5,538,000,000) | (5,214,000,000)
Operating Expenses | 12,034,000,000 | 12,586,000,000 | 13,150,000,000
Other Comprehensive Income (Loss), before Tax | (48,879,000,000) | (9,012,000,000) | 6,262,000,000
Nonperformance Risk [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net | 18,000,000 | (17,000,000) | (10,000,000)
Fair Value Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (1,000,000) | (6,000,000) | 0
Net investment gains (losses) | 43,000,000 | (6,000,000) | (42,000,000)
Policyholder benefits and claims | (60,000,000) | (50,000,000) | 39,000,000
Policyholder Account Balance, Interest Expense | (1,000,000) | 0 | 0
Operating Expenses | 0 | 0 | 0
Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (65,000,000) | (64,000,000) | (40,000,000)
Net investment gains (losses) | 19,000,000 | 82,000,000 | 207,000,000
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 5,000,000 | 5,000,000 | 4,000,000
Other Comprehensive Income (Loss), before Tax | (85,000,000) | 137,000,000 | (286,000,000)
Net Investment Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss), before Tax | 132,000,000 | 139,000,000 | 16,000,000
Foreign Exchange Forward [Member] | Net Investment Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss), before Tax |  | 97,000,000 | 36,000,000
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss), before Tax | 85,000,000 |  |
Interest rate contracts | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (59,000,000) | (56,000,000) | (36,000,000)
Net investment gains (losses) | 41,000,000 | 84,000,000 | 121,000,000
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 4,000,000 | 3,000,000 | 2,000,000
Other Comprehensive Income (Loss), before Tax | (104,000,000) | (143,000,000) | (159,000,000)
Credit forwards [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0 | 0
Currency Swap [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (6,000,000) | (8,000,000) | (4,000,000)
Net investment gains (losses) | (609,000,000) | (403,000,000) | 851,000,000
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 1,000,000 | 2,000,000 | 2,000,000
Other Comprehensive Income (Loss), before Tax | 602,000,000 | 393,000,000 | (857,000,000)
Derivative [Member] | Fair Value Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | 0 | 0 | 0
Net investment gains (losses) | 46,000,000 | 0 | (47,000,000)
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Derivative [Member] | Interest rate swaps | Fair Value Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (9,000,000) | (6,000,000) | (10,000,000)
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 1,187,000,000 | 456,000,000 | (360,000,000)
Policyholder Account Balance, Interest Expense | (26,000,000) | 0 | 0
Operating Expenses | 0 | 0 | 0
Derivative [Member] | Currency Swap [Member] | Fair Value Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (109,000,000) | (50,000,000) | (46,000,000)
Net investment gains (losses) | (220,000,000) | (191,000,000) | 98,000,000
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Fixed Maturity Securities | Interest rate swaps | Fair Value Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (9,000,000) | (6,000,000) | (12,000,000)
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 1,127,000,000 | 406,000,000 | 399,000,000
Policyholder Account Balance, Interest Expense | (27,000,000) | 0 | 0
Operating Expenses | 0 | 0 | 0
Fixed Maturity Securities | Currency Swap [Member] | Fair Value Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | (110,000,000) | (44,000,000) | (44,000,000)
Net investment gains (losses) | 217,000,000 | 185,000,000 | (93,000,000)
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Foreign Currency Gain (Loss) [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 0
Net investment income | 0 | 0 | 0
Net investment gains (losses) | 587,000,000 | 401,000,000 | (765,000,000)
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0 | 0
Non-derivative [Domain] [Member] | Net Investment Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss), before Tax | 47,000,000 | 42,000,000 | (20,000,000)
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 | (14,000,000) | (102,000,000)
Accumulated Other Comprehensive Income (Loss) | Currency Swap [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss), before Tax | 1,784,000,000 | 500,000,000 | (445,000,000)
Accumulated Other Comprehensive Income (Loss) | Interest rate swaps | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss), before Tax | (2,367,000,000) | (599,000,000) | 1,277,000,000
Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 3,559,000,000 | 3,959,000,000 | (533,000,000)
Net investment income | (50,000,000) | (54,000,000) | (34,000,000)
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 158,000,000 | (349,000,000) | 151,000,000
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Foreign Exchange [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 368,000,000 | 986,000,000 | 323,000,000
Net investment income | (2,000,000) | 0 | 0
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | (4,000,000) | (2,000,000) | (3,000,000)
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Credit derivatives — purchased | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (75,000,000) | (9,000,000) | 28,000,000
Net investment income | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Credit derivatives — written | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 92,000,000 | (41,000,000) | 106,000,000
Net investment income | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Equity Market Risk [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (423,000,000) | 1,280,000,000 | 1,151,000,000
Net investment income | (45,000,000) | (56,000,000) | (28,000,000)
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 250,000,000 | (302,000,000) | 203,000,000
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Foreign Currency Gain (Loss) [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (282,000,000) | (249,000,000) | 8,000,000
Net investment income | 0 | 0 | 0
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 0 | 0 | 0
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Interest Rate Risk [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 3,879,000,000 | 1,992,000,000 | (2,149,000,000)
Net investment income | (3,000,000) | (2,000,000) | (6,000,000)
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | 88,000,000 | 49,000,000 | 55,000,000
Policyholder Account Balance, Interest Expense | 0 | 0 | 0
Operating Expenses | 0 | 0 | 0
Nonoperating Income (Expense) [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net investment income | (376,000,000) | (151,000,000) | (217,000,000)
Net investment gains (losses) | 0 | 0 | 0
Policyholder benefits and claims | (150,000,000) | (213,000,000) | (190,000,000)
Gain (Loss) on Derivative Instruments, Net, Pretax | 1,015,000,000 | 984,000,000 | 926,000,000
Policyholder Account Balance, Interest Expense | (145,000,000) | (159,000,000) | (152,000,000)
Operating Expenses | 0 | 0 | 0
Other Comprehensive Income (Loss), before Tax | 0 | 0 | 0
Net Embedded Derivatives |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Policyholder benefits and claims | 0 | 0 | 0
Gain (Loss) on Derivative Instruments, Net, Pretax | 172,000,000 | 747,000,000 | (110,000,000)
Effects of Derivatives on Consolidated Statements of Operations and Comprehensive Income (Loss) [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net investment income | (490,000,000) | (167,000,000) | (223,000,000)
Net investment gains (losses) | 62,000,000 | 76,000,000 | 165,000,000
Policyholder benefits and claims | (248,000,000) | 186,000,000 | 0
Policyholder Account Balance, Interest Expense | 144,000,000 | 159,000,000 | 152,000,000
Operating Expenses | 5,000,000 | 5,000,000 | 4,000,000
Other Comprehensive Income (Loss), before Tax | $ 47,000,000 | $ 276,000,000 | $ (270,000,000)

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