Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Cash Flows [Abstract]
Net cash provided by (used in) operating activities	$ 3,750	$ 2,693
Cash flows from investing activities
Sales, maturities and repayments of fixed maturity securities available-for-sale	44,199	40,034
Sales, maturities and repayments of equity securities	335	125
Sales, maturities and repayments of mortgage loans	8,626	5,057
Sales, maturities and repayments of real estate and real estate joint ventures	736	103
Sales, maturities and repayments of other limited partnership interests	332	160
Purchases of fixed maturity securities available-for-sale	(46,011)	(47,511)
Purchases of equity securities	(34)	(49)
Purchases of mortgage loans	(6,235)	(7,740)
Purchases of real estate and real estate joint ventures	(429)	(942)
Purchases of other limited partnership interests	(1,347)	(874)
Cash received in connection with freestanding derivatives	1,769	5,256
Cash paid in connection with freestanding derivatives	(5,602)	(2,017)
Sales of businesses	3,329	0
Net change in policy loans	137	12
Net change in short-term investments	116	(1,572)
Net change in other invested assets	40	65
Other, net	(6)	165
Net cash provided by (used in) investing activities	(45)	(9,728)
Cash flows from financing activities
Policyholder account balances: Deposits	50,865	50,120
Policyholder account balances: Withdrawals	(46,995)	(43,109)
Net change in payables for collateral under securities loaned and other transactions	506	7,401
Cash received for other transactions with tenors greater than three months	0	50
Cash paid for other transactions with tenors greater than three months	(100)	(50)
Long-term debt issued	15	1,074
Long-term debt repaid	(28)	(13)
Collateral financing arrangement repaid	(27)	(25)
Financing element on certain derivative instruments and other derivative related transactions, net	318	(242)
Treasury stock acquired in connection with share repurchases	(2,112)	(500)
Preferred stock issued, net of issuance costs	0	972
Redemption of preferred stock	(494)	0
Preferred stock redemption premium	(6)	0
Dividends on preferred stock	(103)	(109)
Dividends on common stock	(829)	(823)
Other, net	58	91
Net cash provided by (used in) financing activities	1,068	14,837
Effect of change in foreign currency exchange rates on cash and cash equivalents balances	(192)	(111)
Change in cash and cash equivalents	4,581	7,691
Cash and cash equivalents, including subsidiary held-for-sale, beginning of period	20,560	16,598
Cash and cash equivalents, including subsidiary held-for-sale, end of period	25,141	24,289
Cash and cash equivalents, subsidiary held-for-sale, beginning of period	765	0
Cash and cash equivalents, subsidiary held-for-sale, end of period	104	0
Cash and cash equivalents, beginning of period	19,795	16,598
Cash and cash equivalents, end of period	25,037	24,289
Supplemental disclosures of cash flow information
Net cash paid for Interest	440	426
Net cash paid (received) for Income tax	748	130
Assets held-for-sale	7,590	0
Liabilities held-for-sale	6,844	0
Net assets held-for-sale	746	0
Non-cash transactions:
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	179	52
Real estate and real estate joint ventures acquired in satisfaction of debt	171	0
Increase in equity securities due to in-kind distributions received from other limited partnership interests	151	40
Increase in policyholder account balances associated with funding agreement backed notes issued but not settled	$ 0	$ 750