Investments - Investments - Net Realized Capital Gains (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Investments [Line Items]
Net realized (losses) gains	$ (145)	$ 80
Equity Securities, FV-NI, Unrealized Gain (Loss)	(131)	40
Non-qualifying foreign currency derivatives
Schedule of Investments [Line Items]
Non-qualifying foreign currency derivatives	47	35
Translation Adjustment Functional to Reporting Currency, Increase (Decrease), Gross of Tax	6	(7)
Other, net
Schedule of Investments [Line Items]
Other, net	51	29
Equity Securities [Member]
Schedule of Investments [Line Items]
Equity securities	(107)	43
Equity Securities, FV-NI, Unrealized Gain (Loss)	(147)	37
Equity Securities, FV-NI, Realized Gain (Loss)	40	6
Total Fixed Maturities, AFS
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Realized Gain	23	31
Gross losses on sales of fixed maturities	(95)	(31)
Change in ACL on fixed maturities, AFS	(12)	4
Reduction due to intent to sell	(3)	0
Mortgages [Member]
Schedule of Investments [Line Items]
Change in ACL on mortgage loans	$ (2)	$ 4