Supplemental Disclosures of Cash Flow (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Disclosures of Cash Flow Data [Abstract]
Interest paid	$ 115	$ 127	$ 152
Income taxes paid (received)	29	78	245
Significant non-cash investing and financing transactions:
Equity securities received in exchange of fixed maturity AFS securities		17
Net increase (decrease) in fixed maturity AFS securities and accrued investment income in connection with reinsurance transactions	$ (3,066)	$ 58	432
Decrease in other assets in connection with the expiration of a repurchase agreement			$ (150)