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Fair Value of Financial Instruments - Changes to Fair Value of Financial Instruments Level 3 (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fixed maturity securities available-for-sale:
Assets, Total Gains (Losses) Included in Earnings	$ (8)	$ (4)
Assets, Total Gains (Losses) Included in AOCI	9	(218)
Assets, Purchases	677	501
Assets, Sales	(83)	0
Assets, Settlements	(250)	(179)
Assets, Net transfer In (Out) of Level 3	(391)	(204)
Change in Unrealized Gains (Losses) Incl in OCI	9	(221)
Liabilities
Liabilities, Total Gains (Losses) Included in Earnings	385	(584)
Liabilities, Total Gains (Losses) Included in AOCI	0	0
Liabilities, Purchases	96	126
Liabilities, Sales	0	0
Liabilities, Settlements	(27)	(30)
Liabilities, Net transfer In (Out) of Level 3	$ 0	0
Change in Unrealized Gains (Losses) Included in OCI		$ 0
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
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates)	Unrealized (loss) gain on investments and other financial instruments, net of adjustments to intangible assets and unearned revenue (excluding investments in unconsolidated affiliates)
Level 3
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	$ 8,286	$ 5,641
Balance at End of Period	8,229	5,525
Liabilities
Balance at Beginning of Period	3,397	4,352
Balance at End of Period	3,893	3,881
FIA/ IUL embedded derivatives, included in contractholder funds
Liabilities
Balance at Beginning of Period	3,115	3,883
Liabilities, Total Gains (Losses) Included in Earnings	385	(584)
Liabilities, Total Gains (Losses) Included in AOCI	0	0
Liabilities, Purchases	96	126
Liabilities, Sales	0	0
Liabilities, Settlements	(27)	(30)
Liabilities, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	3,569	3,395
Change in Unrealized Gains (Losses) Included in OCI	0	0
Asset-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	6,263	3,959
Assets, Total Gains (Losses) Included in Earnings	(8)	0
Assets, Total Gains (Losses) Included in AOCI	18	(130)
Assets, Purchases	416	400
Assets, Sales	(83)	0
Assets, Settlements	(235)	(152)
Assets, Net transfer In (Out) of Level 3	(71)	84
Balance at End of Period	6,300	4,161
Change in Unrealized Gains (Losses) Incl in OCI	18	(138)
Commercial mortgage-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	37	35
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	1	(2)
Assets, Purchases	12	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	(21)	7
Balance at End of Period	29	40
Change in Unrealized Gains (Losses) Incl in OCI	1	(2)
Corporates
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	1,440	1,135
Assets, Total Gains (Losses) Included in Earnings	(1)	0
Assets, Total Gains (Losses) Included in AOCI	(23)	(74)
Assets, Purchases	133	80
Assets, Sales	0	0
Assets, Settlements	(5)	(26)
Assets, Net transfer In (Out) of Level 3	0	26
Balance at End of Period	1,544	1,141
Change in Unrealized Gains (Losses) Incl in OCI	(23)	(73)
Municipals
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	29	43
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	3	(6)
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	32	37
Change in Unrealized Gains (Losses) Incl in OCI	3	(5)
Residential mortgage-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	302
Assets, Total Gains (Losses) Included in Earnings	1
Assets, Total Gains (Losses) Included in AOCI	8
Assets, Purchases	8
Assets, Sales	0
Assets, Settlements	(8)
Assets, Net transfer In (Out) of Level 3	(299)
Balance at End of Period	12
Change in Unrealized Gains (Losses) Incl in OCI	8
Foreign Governments
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	16	18
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	(1)
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	16	17
Change in Unrealized Gains (Losses) Incl in OCI	0	(1)
Investment in unconsolidated affiliates
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	23	21
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	0
Assets, Purchases	84	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	107	21
Change in Unrealized Gains (Losses) Incl in OCI	0	0
Short term investments
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	0	321
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	(1)
Assets, Purchases	23	20
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	(321)
Balance at End of Period	23	19
Change in Unrealized Gains (Losses) Incl in OCI	0	(1)
Preferred securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	1	2
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	(1)
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	1	1
Change in Unrealized Gains (Losses) Incl in OCI	0	(1)
Equity securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	10	9
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	0
Assets, Purchases	1	1
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	11	10
Change in Unrealized Gains (Losses) Incl in OCI	0	0
Available-for-sale embedded derivative
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	23	34
Assets, Total Gains (Losses) Included in Earnings	0	(4)
Assets, Total Gains (Losses) Included in AOCI	2	0
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	25	30
Change in Unrealized Gains (Losses) Incl in OCI	2	0
Credit linked note
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	15	23
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	(3)
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	(2)	(1)
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	13	19
Change in Unrealized Gains (Losses) Incl in OCI	0	0
Secured borrowing receivable
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	10
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	10
Change in Unrealized Gains (Losses) Incl in OCI	0
Subtotal Level 3 assets at fair value | Level 3
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	8,169	5,600
Balance at End of Period	8,123	5,496
Market risk benefits asset
Fixed maturity securities available-for-sale:
Balance at End of Period	106
Market risk benefits asset | Level 3
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	117	41
Balance at End of Period		29
Subtotal Level 3 liabilities at fair value
Liabilities
Change in Unrealized Gains (Losses) Included in OCI	0
Subtotal Level 3 liabilities at fair value | Level 3
Liabilities
Balance at Beginning of Period	3,115	3,883
Balance at End of Period	3,569	3,395
Market risk benefits liability | Level 3
Liabilities
Balance at Beginning of Period	282	469
Balance at End of Period	$ 324	$ 486

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