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Investments - Consolidated Investments (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Available-for-sale securities
Amortized Cost	$ 33,836	$ 30,705
Allowance for Expected Credit Losses	(11)	(8)
Gross Unrealized Gains	179	1,518
Gross Unrealized Losses	(3,572)	(225)
Fair Value/Carrying Value	30,432	31,990
Asset-backed securities
Available-for-sale securities
Amortized Cost	9,965	8,516
Allowance for Expected Credit Losses	(2)	(3)
Gross Unrealized Gains	46	220
Gross Unrealized Losses	(561)	(38)
Fair Value/Carrying Value	9,448	8,695
Commercial mortgage-backed securities
Available-for-sale securities
Amortized Cost	3,123	2,684
Allowance for Expected Credit Losses	0	(2)
Gross Unrealized Gains	90	308
Gross Unrealized Losses	(160)	(11)
Fair Value/Carrying Value	3,053	2,979
Corporates
Available-for-sale securities
Amortized Cost	16,639	15,822
Allowance for Expected Credit Losses	(5)	0
Gross Unrealized Gains	31	830
Gross Unrealized Losses	(2,481)	(158)
Fair Value/Carrying Value	14,184	16,494
Hybrids
Available-for-sale securities
Amortized Cost	827	838
Allowance for Expected Credit Losses	0	0
Gross Unrealized Gains	6	74
Gross Unrealized Losses	(64)	0
Fair Value/Carrying Value	769	912
Municipals
Available-for-sale securities
Amortized Cost	1,489	1,445
Allowance for Expected Credit Losses	0	0
Gross Unrealized Gains	3	67
Gross Unrealized Losses	(181)	(11)
Fair Value/Carrying Value	1,311	1,501
Residential mortgage-backed securities
Available-for-sale securities
Amortized Cost	977	731
Allowance for Expected Credit Losses	(4)	(3)
Gross Unrealized Gains	2	7
Gross Unrealized Losses	(73)	(4)
Fair Value/Carrying Value	902	731
U.S. Government
Available-for-sale securities
Amortized Cost	544	393
Allowance for Expected Credit Losses	0	0
Gross Unrealized Gains	1	3
Gross Unrealized Losses	(15)	(2)
Fair Value/Carrying Value	530	394
Foreign Governments
Available-for-sale securities
Amortized Cost	272	276
Allowance for Expected Credit Losses	0	0
Gross Unrealized Gains	0	9
Gross Unrealized Losses	(37)	(1)
Fair Value/Carrying Value	$ 235	$ 284

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