Fair Value of Financial Instruments - Fair Value Inputs Quantitative Information (Details) $ in Millions	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Assets
Fixed maturity AFS securities	$ 94,200	$ 93,448
Equity securities	314	501
Market risk benefit assets	4,303	4,753
Embedded derivative asset	1,332	1,369
Liabilities
Embedded derivative liability	(92)	(289)
Market risk benefit liabilities	(1,127)	(1,118)
Corporate bonds
Assets
Fixed maturity AFS securities	68,284	69,045
ABS
Assets
Fixed maturity AFS securities	17,703	16,282
CMBS
Assets
Fixed maturity AFS securities	2,669	2,502
Hybrid and redeemable preferred securities
Assets
Fixed maturity AFS securities	236	255
(Level 3)
Assets
Equity securities	33	33
Embedded derivative asset	1,332	1,369
Liabilities
Embedded derivative liability	(252)	(434)
(Level 3) \| Valuation Technique, Discounted Cash Flow
Assets
Equity securities	4	4
Market risk benefit assets	4,303	4,753
Embedded derivative asset	1,332	1,369
Liabilities
Embedded derivative liability	(13,462)	(15,031)
Market risk benefit liabilities	(1,127)	(1,118)
(Level 3) \| Corporate bonds
Assets
Fixed maturity AFS securities	3,282	3,913
(Level 3) \| Corporate bonds \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS securities	322	706
(Level 3) \| ABS
Assets
Fixed maturity AFS securities	4,153	3,584
(Level 3) \| ABS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS securities	7	8
(Level 3) \| CMBS
Assets
Fixed maturity AFS securities	103	85
(Level 3) \| CMBS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS securities	40	41
(Level 3) \| Hybrid and redeemable preferred securities
Assets
Fixed maturity AFS securities	82	83
(Level 3) \| Hybrid and redeemable preferred securities \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS securities	40	40
(Level 3) \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit assets	2	2
(Level 3) \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Liabilities
Market risk benefit liabilities	$ (329)	$ (359)
(Level 3) \| Minimum \| Liquidity/Duration Adjustment \| Valuation Technique, Discounted Cash Flow
Assets
Equity securities, measurement input	0.045	0.045
(Level 3) \| Minimum \| Liquidity/Duration Adjustment \| Corporate bonds \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.000	0.000
(Level 3) \| Minimum \| Liquidity/Duration Adjustment \| ABS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.016	0.011
(Level 3) \| Minimum \| Liquidity/Duration Adjustment \| CMBS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.019	0.018
(Level 3) \| Minimum \| Liquidity/Duration Adjustment \| Hybrid and redeemable preferred securities \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.017	0.016
(Level 3) \| Minimum \| Lapse \| Valuation Technique, Discounted Cash Flow
Assets
Embedded derivative asset, measurement input	0.000	0.000
Liabilities
Embedded derivative liability, measurement input	0.000	0.000
(Level 3) \| Minimum \| Lapse \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.010	0.010
(Level 3) \| Minimum \| Lapse \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.010	0.010
(Level 3) \| Minimum \| Utilization of GLB Withdrawls \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.850	0.850
(Level 3) \| Minimum \| Utilization of GLB Withdrawls \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.850	0.850
(Level 3) \| Minimum \| Claims Utilization Factor \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.500	0.500
(Level 3) \| Minimum \| Claims Utilization Factor \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.500	0.500
(Level 3) \| Minimum \| Premiums Utilization Factor \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.800	0.800
(Level 3) \| Minimum \| Premiums Utilization Factor \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.800	0.800
(Level 3) \| Minimum \| Non-Performance Risk \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.003	0.002
(Level 3) \| Minimum \| Non-Performance Risk \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.003	0.002
(Level 3) \| Minimum \| Volatility \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.010	0.010
(Level 3) \| Minimum \| Volatility \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.010	0.010
(Level 3) \| Maximum \| Liquidity/Duration Adjustment \| Valuation Technique, Discounted Cash Flow
Assets
Equity securities, measurement input	0.045	0.045
(Level 3) \| Maximum \| Liquidity/Duration Adjustment \| Corporate bonds \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.065	0.062
(Level 3) \| Maximum \| Liquidity/Duration Adjustment \| ABS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.016	0.011
(Level 3) \| Maximum \| Liquidity/Duration Adjustment \| CMBS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.020	0.019
(Level 3) \| Maximum \| Liquidity/Duration Adjustment \| Hybrid and redeemable preferred securities \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.020	0.019
(Level 3) \| Maximum \| Lapse \| Valuation Technique, Discounted Cash Flow
Assets
Embedded derivative asset, measurement input	0.090	0.090
Liabilities
Embedded derivative liability, measurement input	0.090	0.090
(Level 3) \| Maximum \| Lapse \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.300	0.300
(Level 3) \| Maximum \| Lapse \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.300	0.300
(Level 3) \| Maximum \| Utilization of GLB Withdrawls \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	1.000	1.000
(Level 3) \| Maximum \| Utilization of GLB Withdrawls \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	1.000	1.000
(Level 3) \| Maximum \| Claims Utilization Factor \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	1.000	1.000
(Level 3) \| Maximum \| Claims Utilization Factor \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	1.000	1.000
(Level 3) \| Maximum \| Premiums Utilization Factor \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	1.150	1.150
(Level 3) \| Maximum \| Premiums Utilization Factor \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	1.150	1.150
(Level 3) \| Maximum \| Non-Performance Risk \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.023	0.016
(Level 3) \| Maximum \| Non-Performance Risk \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.023	0.016
(Level 3) \| Maximum \| Volatility \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.270	0.270
(Level 3) \| Maximum \| Volatility \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.270	0.270
(Level 3) \| Weighted Average Range \| Liquidity/Duration Adjustment \| Valuation Technique, Discounted Cash Flow
Assets
Equity securities, measurement input	0.045	0.045
(Level 3) \| Weighted Average Range \| Liquidity/Duration Adjustment \| Corporate bonds \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.019	0.014
(Level 3) \| Weighted Average Range \| Liquidity/Duration Adjustment \| ABS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.016	0.011
(Level 3) \| Weighted Average Range \| Liquidity/Duration Adjustment \| CMBS \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.019	0.018
(Level 3) \| Weighted Average Range \| Liquidity/Duration Adjustment \| Hybrid and redeemable preferred securities \| Valuation Technique, Discounted Cash Flow
Assets
Fixed maturity AFS and trading securities, measurement input	0.019	0.017
(Level 3) \| Weighted Average Range \| Utilization of GLB Withdrawls \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.930	0.930
(Level 3) \| Weighted Average Range \| Utilization of GLB Withdrawls \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.930	0.930
(Level 3) \| Weighted Average Range \| Non-Performance Risk \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.018	0.013
(Level 3) \| Weighted Average Range \| Non-Performance Risk \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.018	0.013
(Level 3) \| Weighted Average Range \| Volatility \| Other assets – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.149	0.151
(Level 3) \| Weighted Average Range \| Volatility \| Other liabilities – ceded MRBs \| Valuation Technique, Discounted Cash Flow
Assets
Market risk benefit, measurement input	0.149	0.151

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