Fair Value of Financial Instruments - Schedule of Significant Unobservable Inputs Used for Fair Value Measurements Classified As Level 3 (Details) $ in Millions	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 45,762	$ 44,902
Derivative assets, fair value	39	56
Other assets, fair value	349	408
Reinsurance recoverable
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other assets, fair value	98	107	$ 140
Equity index options
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets, fair value	18	19
Forward bond purchase commitments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets, fair value	6	6
U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	27,046	26,771
Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	7,191	7,327
Utilities | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	4,515	4,282
Utilities | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	637	693
Energy | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	2,452	2,312
Energy | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	944	1,006
Finance and insurance | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	7,057	6,911
Finance and insurance | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	1,719	1,774
Consumer—non-cyclical | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	4,406	4,387
Consumer—non-cyclical | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	557	556
Technology and communications | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	2,749	2,723
Technology and communications | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	689	726
Industrial | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	954	1,072
Industrial | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	761	766
Capital goods | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	2,319	2,243
Capital goods | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	692	591
Consumer—cyclical | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	1,249	1,497
Consumer—cyclical | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	250	230
Transportation | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	1,075	1,074
Transportation | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	485	436
Other | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	270	270
Other | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	457	549
Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	3,071	2,793
Derivative assets, fair value	24	25
Level 3 | Lapse rate | Reinsurance recoverable
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other assets, fair value	98
Level 3 | Equity index options
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets, fair value	18	19
Level 3 | Equity index options | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets, fair value	$ 18
Level 3 | Equity index options | Minimum | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input	0.06
Level 3 | Equity index options | Maximum | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input	0.38
Level 3 | Equity index options | Weighted Average | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input	0.23
Level 3 | Forward bond purchase commitments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets, fair value	$ 6	6
Level 3 | Forward bond purchase commitments | Counterparty financing spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets, fair value	$ 6
Level 3 | Forward bond purchase commitments | Minimum | Counterparty financing spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input	0.0012
Level 3 | Forward bond purchase commitments | Maximum | Counterparty financing spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input	0.0035
Level 3 | Forward bond purchase commitments | Weighted Average | Counterparty financing spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input	0.0021
Level 3 | Reinsurance recoverable | Minimum | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.14
Level 3 | Reinsurance recoverable | Minimum | Lapse rate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.02
Level 3 | Reinsurance recoverable | Minimum | Non-performance risk (credit spreads)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.0042
Level 3 | Reinsurance recoverable | Maximum | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.27
Level 3 | Reinsurance recoverable | Maximum | Lapse rate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.09
Level 3 | Reinsurance recoverable | Maximum | Non-performance risk (credit spreads)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.0083
Level 3 | Reinsurance recoverable | Weighted Average | Equity index volatility
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.22
Level 3 | Reinsurance recoverable | Weighted Average | Lapse rate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.05
Level 3 | Reinsurance recoverable | Weighted Average | Non-performance risk (credit spreads)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net market risk benefit, measurement input	0.0069
Level 3 | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 1,957	1,950
Level 3 | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 1,846
Level 3 | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0014
Level 3 | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0225
Level 3 | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0121
Level 3 | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 749	675
Level 3 | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 704
Level 3 | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0060
Level 3 | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0216
Level 3 | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0114
Level 3 | Utilities | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 1,004	845
Level 3 | Utilities | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 960
Level 3 | Utilities | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0060
Level 3 | Utilities | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0225
Level 3 | Utilities | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0120
Level 3 | Utilities | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 237	282
Level 3 | Utilities | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 228
Level 3 | Utilities | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0084
Level 3 | Utilities | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0216
Level 3 | Utilities | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0115
Level 3 | Energy | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 21	21
Level 3 | Energy | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 21
Level 3 | Energy | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0116
Level 3 | Energy | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0161
Level 3 | Energy | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0141
Level 3 | Energy | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 107	116
Level 3 | Energy | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 96
Level 3 | Energy | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0084
Level 3 | Energy | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0161
Level 3 | Energy | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0110
Level 3 | Finance and insurance | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 619	688
Level 3 | Finance and insurance | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 604
Level 3 | Finance and insurance | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0014
Level 3 | Finance and insurance | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0204
Level 3 | Finance and insurance | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0127
Level 3 | Finance and insurance | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 22	21
Level 3 | Finance and insurance | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 22
Level 3 | Finance and insurance | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0102
Level 3 | Finance and insurance | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0121
Level 3 | Finance and insurance | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0109
Level 3 | Consumer—non-cyclical | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 35	63
Level 3 | Consumer—non-cyclical | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 35
Level 3 | Consumer—non-cyclical | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0071
Level 3 | Consumer—non-cyclical | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0202
Level 3 | Consumer—non-cyclical | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0116
Level 3 | Consumer—non-cyclical | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 16	39
Level 3 | Consumer—non-cyclical | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 15
Level 3 | Consumer—non-cyclical | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0090
Level 3 | Consumer—non-cyclical | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0135
Level 3 | Consumer—non-cyclical | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0098
Level 3 | Technology and communications | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 18	12
Level 3 | Technology and communications | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 18
Level 3 | Technology and communications | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0071
Level 3 | Technology and communications | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0168
Level 3 | Technology and communications | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0105
Level 3 | Technology and communications | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 9	17
Level 3 | Technology and communications | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 9
Fixed maturity securities, measurement input	0.0082
Level 3 | Industrial | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 16	15
Level 3 | Industrial | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 16
Level 3 | Industrial | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0082
Level 3 | Industrial | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0161
Level 3 | Industrial | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0108
Level 3 | Industrial | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 116	67
Level 3 | Industrial | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 115
Level 3 | Industrial | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0093
Level 3 | Industrial | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0162
Level 3 | Industrial | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0115
Level 3 | Capital goods | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 37	43
Level 3 | Capital goods | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 37
Level 3 | Capital goods | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0116
Level 3 | Capital goods | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0132
Level 3 | Capital goods | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0122
Level 3 | Capital goods | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 64	47
Level 3 | Capital goods | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 57
Level 3 | Capital goods | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0116
Level 3 | Capital goods | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0192
Level 3 | Capital goods | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0134
Level 3 | Consumer—cyclical | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 55	99
Level 3 | Consumer—cyclical | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 51
Level 3 | Consumer—cyclical | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0082
Level 3 | Consumer—cyclical | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0127
Level 3 | Consumer—cyclical | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0114
Level 3 | Consumer—cyclical | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 24	0
Level 3 | Consumer—cyclical | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 22
Fixed maturity securities, measurement input	0.0117
Level 3 | Transportation | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 27	31
Level 3 | Transportation | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 27
Level 3 | Transportation | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0048
Level 3 | Transportation | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0147
Level 3 | Transportation | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0126
Level 3 | Transportation | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 79	35
Level 3 | Transportation | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 78
Level 3 | Transportation | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0093
Level 3 | Transportation | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0161
Level 3 | Transportation | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0120
Level 3 | Other | U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 125	133
Level 3 | Other | U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 77
Level 3 | Other | U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0080
Level 3 | Other | U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0137
Level 3 | Other | U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0096
Level 3 | Other | Non-U.S. corporate
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 75	$ 51
Level 3 | Other | Non-U.S. corporate | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, fair value	$ 62
Level 3 | Other | Non-U.S. corporate | Minimum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0060
Level 3 | Other | Non-U.S. corporate | Maximum | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0116
Level 3 | Other | Non-U.S. corporate | Weighted Average | Credit spreads
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed maturity securities, measurement input	0.0097