Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Cash Flows [Abstract]
Net cash provided by (used in) operating activities	$ 80	$ 158
Cash flows from investing activities
Sales, maturities and repayments of fixed maturity securities	2,595	1,644
Sales, maturities and repayments of equity securities	53	14
Sales, maturities and repayments of mortgage loans	724	480
Sales, maturities and repayments of limited partnerships and limited liability companies	49	69
Purchases of fixed maturity securities	(3,945)	(2,469)
Purchases of equity securities	(6)	0
Purchases of mortgage loans	(568)	(277)
Purchases of limited partnerships and limited liability companies	(204)	(178)
Cash received in connection with freestanding derivatives	1,012	3,411
Cash paid in connection with freestanding derivatives	(1,581)	(1,806)
Issuances of loans to affiliate	0	(100)
Net change in policy loans	40	39
Net change in short-term investments	1,573	(2,245)
Net change in other invested assets	0	18
Net cash provided by (used in) investing activities	(258)	(1,400)
Cash flows from financing activities
Policyholder account balances: Deposits	1,921	1,839
Policyholder account balances: Withdrawals	(682)	(473)
Net change in payables for collateral under securities loaned and other transactions	(968)	6,590
Long-term and short-term debt issued	0	100
Dividends paid to parent	0	(300)
Financing element on certain derivative instruments and other derivative related transactions, net	(67)	(486)
Other, net	0	(13)
Net cash provided by (used in) financing activities	204	7,257
Change in cash, cash equivalents and restricted cash	26	6,015
Cash, cash equivalents and restricted cash, beginning of period	3,684	2,493
Cash, cash equivalents and restricted cash, end of period	3,710	8,508
Supplemental disclosures of cash flow information
Net cash paid (received) for interest	34	34
Net cash paid (received) for income tax	$ (21)	$ 0