Fair Value of Financial Instruments - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets
Fixed maturity available-for-sale securities, at fair value	$ 88,329	$ 87,586
Trading securities	1,537	1,660
Equity securities	308	495
Mortgage loans on real estate, fair value	198	199
Market risk benefit assets	4,303	4,753
Derivative instruments	13,505	16,029
Other investments – short-term investments	193	194
Separate account assets	172,043	180,092
Total assets	283,135	293,711
Liabilities
Embedded derivative liability	536	202
Market risk benefit liabilities	(1,127)	(1,118)
Derivative liabilities	(18,716)	(21,259)
Total liabilities	(21,943)	(25,059)
Indexed annuity ceded embedded derivatives
Assets
Embedded derivative asset	2,471	2,482
LPR ceded derivative
Assets
Embedded derivative asset	169	202
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Trading securities	0	0
Equity securities	38	233
Mortgage loans on real estate, fair value	0	0
Derivative instruments	0	0
Other investments – short-term investments	0	0
Separate account assets	367	383
Total assets	1,335	1,495
Liabilities
Embedded derivative liability	0	0
Total liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Indexed annuity ceded embedded derivatives
Assets
Embedded derivative asset	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | LPR ceded derivative
Assets
Embedded derivative asset	0	0
Significant Observable Inputs (Level 2)
Assets
Trading securities	1,314	1,331
Equity securities	242	234
Mortgage loans on real estate, fair value	0	0
Derivative instruments	13,436	16,001
Other investments – short-term investments	165	193
Separate account assets	171,676	179,709
Total assets	263,478	273,126
Liabilities
Embedded derivative liability	670	358
Total liabilities	(4,468)	(5,650)
Significant Observable Inputs (Level 2) | Indexed annuity ceded embedded derivatives
Assets
Embedded derivative asset	0	0
Significant Observable Inputs (Level 2) | LPR ceded derivative
Assets
Embedded derivative asset	0	0
Significant Unobservable Inputs (Level 3)
Assets
Trading securities	223	329
Equity securities	28	28
Mortgage loans on real estate, fair value	198	199
Derivative instruments	69	28
Other investments – short-term investments	28	1
Separate account assets	0	0
Total assets	18,322	19,090
Liabilities
Embedded derivative liability	(134)	(156)
Total liabilities	(17,475)	(19,409)
Significant Unobservable Inputs (Level 3) | Indexed annuity ceded embedded derivatives
Assets
Embedded derivative asset	2,471	2,482
Significant Unobservable Inputs (Level 3) | LPR ceded derivative
Assets
Embedded derivative asset	169	202
Fair Value Measured at Net Asset Value Per Share
Liabilities
Alternative Investment	161	134
Corporate bonds
Assets
Fixed maturity available-for-sale securities, at fair value	62,932	63,723
Corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
Corporate bonds | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	56,516	56,426
Corporate bonds | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	6,416	7,297
U.S. government bonds
Assets
Fixed maturity available-for-sale securities, at fair value	919	867
U.S. government bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	899	848
U.S. government bonds | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	20	19
U.S. government bonds | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
State and municipal bonds
Assets
Fixed maturity available-for-sale securities, at fair value	1,943	1,965
State and municipal bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
State and municipal bonds | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	1,943	1,965
State and municipal bonds | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
Foreign government bonds
Assets
Fixed maturity available-for-sale securities, at fair value	202	223
Foreign government bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
Foreign government bonds | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	202	223
Foreign government bonds | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
RMBS
Assets
Fixed maturity available-for-sale securities, at fair value	1,910	1,965
RMBS | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
RMBS | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	1,910	1,965
RMBS | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
CMBS
Assets
Fixed maturity available-for-sale securities, at fair value	2,591	2,423
CMBS | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
CMBS | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	2,488	2,338
CMBS | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	103	85
ABS
Assets
Fixed maturity available-for-sale securities, at fair value	17,608	16,178
ABS | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	0	0
ABS | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	13,455	12,594
ABS | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	4,153	3,584
Hybrid and redeemable preferred securities
Assets
Fixed maturity available-for-sale securities, at fair value	224	242
Hybrid and redeemable preferred securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fixed maturity available-for-sale securities, at fair value	31	31
Hybrid and redeemable preferred securities | Significant Observable Inputs (Level 2)
Assets
Fixed maturity available-for-sale securities, at fair value	111	128
Hybrid and redeemable preferred securities | Significant Unobservable Inputs (Level 3)
Assets
Fixed maturity available-for-sale securities, at fair value	82	83
MRB assets
Assets
Market risk benefit assets	4,303	4,753
MRB assets | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Market risk benefit assets	0	0
MRB assets | Significant Observable Inputs (Level 2)
Assets
Market risk benefit assets	0	0
MRB assets | Significant Unobservable Inputs (Level 3)
Assets
Market risk benefit assets	4,303	4,753
Ceded MRBs
Assets
Market risk benefit assets	79	19
Liabilities
Market risk benefit liabilities	(2,636)	(2,884)
Ceded MRBs | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Market risk benefit assets	0	0
Liabilities
Market risk benefit liabilities	0	0
Ceded MRBs | Significant Observable Inputs (Level 2)
Assets
Market risk benefit assets	0	0
Liabilities
Market risk benefit liabilities	0	0
Ceded MRBs | Significant Unobservable Inputs (Level 3)
Assets
Market risk benefit assets	79	19
Liabilities
Market risk benefit liabilities	(2,636)	(2,884)
RILA, Fixed Annity And IUL Contracts
Liabilities
Policyholder account balances – RILA, fixed annuity and IUL contracts	(13,444)	(15,115)
RILA, Fixed Annity And IUL Contracts | Quoted Prices in Active Markets for Identical Assets (Level 1)
Liabilities
Policyholder account balances – RILA, fixed annuity and IUL contracts	0	0
RILA, Fixed Annity And IUL Contracts | Significant Observable Inputs (Level 2)
Liabilities
Policyholder account balances – RILA, fixed annuity and IUL contracts	0	0
RILA, Fixed Annity And IUL Contracts | Significant Unobservable Inputs (Level 3)
Liabilities
Policyholder account balances – RILA, fixed annuity and IUL contracts	(13,444)	(15,115)
MRB liabilities
Liabilities
Market risk benefit liabilities	(1,127)	(1,118)
MRB liabilities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Liabilities
Market risk benefit liabilities	0	0
MRB liabilities | Significant Observable Inputs (Level 2)
Liabilities
Market risk benefit liabilities	0	0
MRB liabilities | Significant Unobservable Inputs (Level 3)
Liabilities
Market risk benefit liabilities	(1,127)	(1,118)
Derivatives
Liabilities
Derivative liabilities	(5,272)	(6,144)
Derivatives | Quoted Prices in Active Markets for Identical Assets (Level 1)
Liabilities
Derivative liabilities	0	0
Derivatives | Significant Observable Inputs (Level 2)
Liabilities
Derivative liabilities	(5,138)	(6,008)
Derivatives | Significant Unobservable Inputs (Level 3)
Liabilities
Derivative liabilities	$ (134)	$ (136)