Investments - Net Realized Capital Gains (Losses) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	$ (53,000,000)	$ (136,000,000)	$ (78,000,000)	$ (318,000,000)
Available for Sale Securities, Gross Realized Gains (Losses), Proceeds on Sales	1,252,000,000	574,000,000
Debt Securities, Available-for-Sale, Realized Gain	17,000,000	8,000,000	29,000,000	18,000,000
Debt Securities, Available-for-Sale, Realized Loss	18,000,000	8,000,000	39,000,000	33,000,000
Gain (Loss) on Securities [Line Items]
Available for Sale Securities, Gross Realized Gains (Losses), Proceeds on Sales	1,252,000,000	574,000,000
Proceeds on sales			2,132,000,000	1,444,000,000
Debt Securities, Available-for-Sale, Realized Gain	17,000,000	8,000,000	29,000,000	18,000,000
Debt Securities, Available-for-Sale, Realized Loss	18,000,000	8,000,000	39,000,000	33,000,000
Embedded derivatives - fixed maturities
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(1,000,000)	(1,000,000)	0	(3,000,000)
Mortgages [Member]
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)			(8,000,000)	4,000,000
Stabilizer and Managed Custody Guarantees
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(8,000,000)	1,000,000
Other derivatives, net
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	0	11,000,000	0	18,000,000
Standalone derivatives
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	0	1,000,000	3,000,000	(2,000,000)
Derivatives
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	85,000,000	5,000,000	57,000,000	57,000,000
Other investments
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(53,000,000)	(136,000,000)	0	(1,000,000)
Mortgages [Member]
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(1,000,000)	0
Fixed Maturities, Available-for-sale, Including Securities Pledged
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(15,000,000)	(3,000,000)	(24,000,000)	(62,000,000)
Fixed Maturities, at Fair Value Using the Fair Value Option
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	(111,000,000)	(133,000,000)	(100,000,000)	(308,000,000)
Equity securities
Available-for-sale Securities Including Securities Pledged [Line Items]
Realized capital gains (losses)	$ (2,000,000)	$ (17,000,000)	$ (6,000,000)	$ (21,000,000)