Fair Value of Financial Instruments - Changes to Fair Value of Financial Instruments Level 3 (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Liabilities:
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Recognized gains and (losses), net	Recognized gains and (losses), net	Recognized gains and (losses), net	Recognized gains and (losses), net
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Recognized gains and (losses), net	Recognized gains and (losses), net	Recognized gains and (losses), net	Recognized gains and (losses), net
Level 3
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	$ 8,205	$ 5,499	$ 8,262	$ 5,617
Balance at End of Period	8,734	6,286	8,734	6,286
Liabilities:
Balance at Beginning of Period	3,893	3,881	3,397	4,352
Balance at End of Period	4,134	3,233	4,134	3,233
FIA/ IUL embedded derivatives
Liabilities:
Balance at Beginning of Period	3,569	3,395	3,115	3,883
Liabilities, Total Gains (Losses) Included in Earnings	197	(575)	582	(1,159)
Liabilities, Total Gains (Losses) Included in AOCI	0	0	0	0
Liabilities, Purchases	93	146	189	272
Liabilities, Sales	0	0	0	0
Liabilities, Settlements	(38)	(25)	(65)	(55)
Liabilities, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period	3,821	2,941	3,821	2,941
Change in Unrealized Gains (Losses) Incl in OCI	0	0	0	0
Asset-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	6,300	4,161	6,263	3,959
Assets, Total Gains (Losses) Included in Earnings	(3)	1	(11)	1
Assets, Total Gains (Losses) Included in AOCI	15	(142)	33	(272)
Assets, Purchases	379	827	795	1,227
Assets, Sales	(15)	(39)	(98)	(39)
Assets, Settlements	(151)	(126)	(386)	(278)
Assets, Net transfer In (Out) of Level 3	(15)	(5)	(86)	79
Balance at End of Period	6,510	4,677	6,510	4,677
Change in Unrealized Gains (Losses) Incl in OCI	14	(153)	32	(291)
Commercial mortgage-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	29	40	37	35
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	0	(3)	1	(5)
Assets, Purchases	0	0	12	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	(12)	0	(33)	7
Balance at End of Period	17	37	17	37
Change in Unrealized Gains (Losses) Incl in OCI	0	(2)	1	(4)
Corporates
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	1,532	1,126	1,427	1,121
Assets, Total Gains (Losses) Included in Earnings	0	0	(1)	0
Assets, Total Gains (Losses) Included in AOCI	(33)	(64)	(56)	(137)
Assets, Purchases	125	304	259	382
Assets, Sales	0	0	0	0
Assets, Settlements	(14)	(6)	(19)	(32)
Assets, Net transfer In (Out) of Level 3	8	(4)	8	22
Balance at End of Period	1,618	1,356	1,618	1,356
Change in Unrealized Gains (Losses) Incl in OCI	(33)	(61)	(56)	(134)
Hybrids
Fixed maturity securities available-for-sale:
Balance at Beginning of Period			0
Assets, Total Gains (Losses) Included in Earnings			0
Assets, Total Gains (Losses) Included in AOCI			0
Assets, Purchases			0
Assets, Sales			0
Assets, Settlements			0
Assets, Net transfer In (Out) of Level 3			0
Balance at End of Period	0		0
Change in Unrealized Gains (Losses) Incl in OCI			0
Municipals
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	32	37	29	43
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	17	(4)	20	(10)
Assets, Purchases	0	0	0	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period	49	33	49	33
Change in Unrealized Gains (Losses) Incl in OCI	17	(4)	20	(9)
Residential mortgage-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	12		302	0
Assets, Total Gains (Losses) Included in Earnings	0	0	1	0
Assets, Total Gains (Losses) Included in AOCI	0	0	8	0
Assets, Purchases	24	9	32	9
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	(8)	0
Assets, Net transfer In (Out) of Level 3	(8)	0	(307)	0
Balance at End of Period	28	9	28	9
Change in Unrealized Gains (Losses) Incl in OCI	0	0	8	0
Foreign governments
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	16	17	16	18
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	0	(1)	0	(2)
Assets, Purchases	0	0	0	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period	16	16	16	16
Change in Unrealized Gains (Losses) Incl in OCI	0	(1)	0	(1)
Short-term
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	23	19	0	321
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	0	0	0	(1)
Assets, Purchases	103	0	126	20
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	0	(19)	0	(340)
Balance at End of Period	126	0	126	0
Change in Unrealized Gains (Losses) Incl in OCI	0	0	0	(1)
Preferred securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period			0	1
Assets, Total Gains (Losses) Included in Earnings	0		0	0
Assets, Total Gains (Losses) Included in AOCI	0		0	(1)
Assets, Purchases	0		0	0
Assets, Sales	0		0	0
Assets, Settlements	0		0	0
Assets, Net transfer In (Out) of Level 3	6		6	0
Balance at End of Period	6	0	6	0
Change in Unrealized Gains (Losses) Incl in OCI	0		0	(1)
Available-for-sale embedded derivative
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	25	30	23	34
Assets, Total Gains (Losses) Included in Earnings	0	(6)	0	(10)
Assets, Total Gains (Losses) Included in AOCI	1	0	3	0
Assets, Purchases	0	0	0	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period	26	24	26	24
Change in Unrealized Gains (Losses) Incl in OCI	1	0	3	0
Investment in affiliate
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	107	21	23	21
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	0	0	0	0
Assets, Purchases	90	0	174	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period	197	21	197	21
Change in Unrealized Gains (Losses) Incl in OCI	0	0	0	0
Credit linked note
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	13	19	15	23
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	0	0	0	(3)
Assets, Purchases	0	0	0	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	(2)	(2)	(3)
Assets, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period	13	17	13	17
Change in Unrealized Gains (Losses) Incl in OCI	0	0	0	0
Secured borrowing receivable
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	10	0	10	0
Assets, Total Gains (Losses) Included in Earnings	0	0	0	0
Assets, Total Gains (Losses) Included in AOCI	0	0	0	0
Assets, Purchases	0	0	0	0
Assets, Sales	0	0	0	0
Assets, Settlements	0	0	0	0
Assets, Net transfer In (Out) of Level 3	0	10	0	10
Balance at End of Period	10	10	10	10
Change in Unrealized Gains (Losses) Incl in OCI	0	0	0	0
Subtotal assets at Level 3 fair value
Fixed maturity securities available-for-sale:
Balance at Beginning of Period			8,145	5,576
Assets, Total Gains (Losses) Included in Earnings	(3)	(5)	(11)	(9)
Assets, Total Gains (Losses) Included in AOCI	0	(214)	9	(431)
Assets, Purchases	721	1,140	1,398	1,638
Assets, Sales	(15)	(39)	(98)	(39)
Assets, Settlements	(165)	(134)	(415)	(313)
Assets, Net transfer In (Out) of Level 3	(21)	(18)	(412)	(222)
Balance at End of Period	8,616	6,200	8,616	6,200
Change in Unrealized Gains (Losses) Incl in OCI	(1)	(221)	8	(441)
Subtotal assets at Level 3 fair value | Level 3
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	8,099	5,470
Balance at End of Period	8,616	6,200	8,616	6,200
Market risk benefits asset | Level 3
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	106	29	117	41
Balance at End of Period	118	86	118	86
Subtotal liabilities at Level 3 fair value
Liabilities:
Balance at Beginning of Period				3,883
Liabilities, Total Gains (Losses) Included in Earnings	197	(575)	582	(1,159)
Liabilities, Total Gains (Losses) Included in AOCI	0	0	0	0
Liabilities, Purchases	93	146	189	272
Liabilities, Sales	0	0	0	0
Liabilities, Settlements	(38)	(25)	(65)	(55)
Liabilities, Net transfer In (Out) of Level 3	0	0	0	0
Balance at End of Period		2,941		2,941
Change in Unrealized Gains (Losses) Incl in OCI	0	0	0	0
Subtotal liabilities at Level 3 fair value | Level 3
Liabilities:
Balance at Beginning of Period	3,569	3,395	3,115
Balance at End of Period	3,821	2,941	3,821	2,941
Market risk benefits liability | Level 3
Liabilities:
Balance at Beginning of Period	324		282	486
Balance at End of Period	$ 313	$ 292	$ 313	$ 292