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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, 2022	Mar. 31, 2021
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	$ 5,600	$ 3,267
Assets, Total Gains (Losses) Included in Earnings	(4)	9
Assets, Total Gains (Losses) Included in AOCI	(218)	(57)
Assets, Purchases	501	406
Assets, Sales	0	(5)
Assets, Settlements	(179)	(140)
Assets, Net transfer In (Out) of Level 3	(204)	(14)
Balance at End of Period	5,496	3,466
Change in Unrealized Gains (Losses) Incl in OCI	(221)	49
Liabilities
Balance at Beginning of Period	3,883	3,409
Liabilities, Total Gains (Losses) Included in Earnings	(488)	(111)
Liabilities, Total Gains (Losses) Included in AOCI	0	0
Liabilities, Purchases	0	0
Liabilities, Sales	0	0
Liabilities, Settlements	0	(1)
Liabilities, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	3,395	3,297
Change in Unrealized Gains (Losses) Incl in OCI	0	0
Future policy benefits
Liabilities
Balance at Beginning of Period		5
Liabilities, Total Gains (Losses) Included in Earnings		0
Liabilities, Total Gains (Losses) Included in AOCI		0
Liabilities, Purchases		0
Liabilities, Sales		0
Liabilities, Settlements		(1)
Liabilities, Net transfer In (Out) of Level 3		0
Balance at End of Period		4
Change in Unrealized Gains (Losses) Incl in OCI		0
FIA/ IUL embedded derivatives, included in contractholder funds
Liabilities
Balance at Beginning of Period	3,883	3,404
Liabilities, Total Gains (Losses) Included in Earnings	(488)	(111)
Liabilities, Total Gains (Losses) Included in AOCI	0	0
Liabilities, Purchases	0	0
Liabilities, Sales	0	0
Liabilities, Settlements	0	0
Liabilities, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	3,395	3,293
Change in Unrealized Gains (Losses) Incl in OCI		0
Asset-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	3,959	1,350
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	(130)	(23)
Assets, Purchases	400	358
Assets, Sales	0	0
Assets, Settlements	(152)	(92)
Assets, Net transfer In (Out) of Level 3	84	0
Balance at End of Period	4,161	1,593
Change in Unrealized Gains (Losses) Incl in OCI	(138)	(4)
Commercial mortgage-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	35	26
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	(2)	(1)
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	7	0
Balance at End of Period	40	25
Change in Unrealized Gains (Losses) Incl in OCI	(2)	1
Corporates
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	1,135	1,289
Assets, Total Gains (Losses) Included in Earnings	0	6
Assets, Total Gains (Losses) Included in AOCI	(74)	(39)
Assets, Purchases	80	40
Assets, Sales	0	(5)
Assets, Settlements	(26)	(31)
Assets, Net transfer In (Out) of Level 3	26	(14)
Balance at End of Period	1,141	1,246
Change in Unrealized Gains (Losses) Incl in OCI	(73)	19
Hybrids
Fixed maturity securities available-for-sale:
Balance at Beginning of Period		4
Assets, Total Gains (Losses) Included in Earnings		0
Assets, Total Gains (Losses) Included in AOCI		0
Assets, Purchases		0
Assets, Sales		0
Assets, Settlements		(4)
Assets, Net transfer In (Out) of Level 3		0
Balance at End of Period		0
Change in Unrealized Gains (Losses) Incl in OCI		0
Municipals
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	43	43
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	(6)	(2)
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	37	41
Change in Unrealized Gains (Losses) Incl in OCI	(5)	4
Residential mortgage-backed securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	0	483
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	0	12
Assets, Purchases	0	5
Assets, Sales	0	0
Assets, Settlements	0	(13)
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	0	487
Change in Unrealized Gains (Losses) Incl in OCI	0	27
Foreign Governments
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	18	17
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	(1)	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	17	17
Change in Unrealized Gains (Losses) Incl in OCI	(1)	2
Short term investments
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	321
Assets, Total Gains (Losses) Included in Earnings	0
Assets, Total Gains (Losses) Included in AOCI	(1)
Assets, Purchases	20
Assets, Sales	0
Assets, Settlements	0
Assets, Net transfer In (Out) of Level 3	(321)
Balance at End of Period	19
Change in Unrealized Gains (Losses) Incl in OCI	(1)
Preferred securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	2
Assets, Total Gains (Losses) Included in Earnings	0
Assets, Total Gains (Losses) Included in AOCI	(1)
Assets, Purchases	0
Assets, Sales	0
Assets, Settlements	0
Assets, Net transfer In (Out) of Level 3	0
Balance at End of Period	1
Change in Unrealized Gains (Losses) Incl in OCI	(1)
Equity securities
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	9	5
Assets, Total Gains (Losses) Included in Earnings	0	1
Assets, Total Gains (Losses) Included in AOCI	0	0
Assets, Purchases	1	3
Assets, Sales	0	0
Assets, Settlements	0	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	10	9
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	34	27
Assets, Total Gains (Losses) Included in Earnings	(4)	2
Assets, Total Gains (Losses) Included in AOCI	0	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	30	29
Change in Unrealized Gains (Losses) Incl in OCI	0	0
Investment in affiliate
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	21
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	21
Change in Unrealized Gains (Losses) Incl in OCI	0
Credit linked note
Fixed maturity securities available-for-sale:
Balance at Beginning of Period	23	23
Assets, Total Gains (Losses) Included in Earnings	0	0
Assets, Total Gains (Losses) Included in AOCI	(3)	(4)
Assets, Purchases	0	0
Assets, Sales	0	0
Assets, Settlements	(1)	0
Assets, Net transfer In (Out) of Level 3	0	0
Balance at End of Period	19	19
Change in Unrealized Gains (Losses) Incl in OCI	$ 0	$ 0

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