CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Cash Flows [Abstract]
Net income	$ 1,028	$ 1,497
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion, net	120	96
Deferred income tax expense (benefit)	161	521
Share-based compensation	74	72
Net realized investment (gains) losses	(79)	(10)
Net trading (gains) losses	3	(6)
Loss from equity method investments	33	39
Impairments and provision for loan losses	7	20
Net (gains) losses of consolidated investment entities	(20)	13
Changes in operating assets and liabilities:
Restricted and segregated investments	(265)
Deferred acquisition costs	(70)	156
Policyholder account balances, future policy benefits and claims, net	377	2,721
Derivatives, net of collateral	(122)	(267)
Receivables	(236)	(131)
Brokerage deposits	(104)	192
Accounts payable and accrued expenses	153	(205)
Current income tax expense (benefit)	(286)	(382)
Increase (Decrease) in Deferred Income Taxes	(312)	(3)
Other operating assets and liabilities of consolidated investment entities, net	8	(6)
Other, net	461	386
Net cash provided by (used in) operating activities	931	4,703
Available-for-Sale securities:
Proceeds from sales	405	1,318
Maturities, sinking fund payments and calls	5,714	4,162
Purchases	(6,210)	(6,138)
Proceeds from sales, maturities and repayments of mortgage loans	173	92
Funding of mortgage loans	(120)	(132)
Proceeds from sales, maturities and collections of other investments	112	109
Purchase of other investments	(54)	(134)
Purchase of investments by consolidated investment entities	(1,178)	(376)
Proceeds from sales, maturities and repayments of investments by consolidated investment entities	556	343
Purchase of land, buildings, equipment and software	(55)	(62)
Cash paid for written options with deferred premiums	(210)	(258)
Cash received from written options with deferred premiums	24	108
Cash paid for deposit receivable	(4)	(1)
Cash received for deposit receivable	44	53
Other, net	(106)	20
Net cash provided by (used in) investing activities	(909)	(896)
Investment certificates:
Proceeds from additions	1,397	2,534
Maturities, withdrawals and cash surrenders	(2,407)	(2,599)
Policyholder account balances:
Deposits and other additions	751	774
Net transfers from (to) separate accounts	(132)	(15)
Surrenders and other benefits	(693)	(726)
Change in banking deposits, net	1,268	1,510
Cash paid for purchased options with deferred premiums	(76)	(131)
Cash received from purchased options with deferred premiums	342	39
Issuance of long-term debt	4	496
Repayments of long-term debt	(4)	(756)
Dividends paid to shareholders	(255)	(250)
Repurchase of common shares	(911)	(716)
Exercise of stock options		2
Borrowings of Consolidated Investment Entities	1,375
Repayments of debt by consolidated investment entities	(754)	(37)
Other, net	(6)	(8)
Net cash provided by (used in) financing activities	(101)	117
Effect of exchange rate changes on cash	9	(18)
Net increase (decrease) in cash and cash equivalents, including amounts restricted	(70)	3,906
Cash and cash equivalents, including amounts restricted, at beginning of period	8,903	6,213
Cash and cash equivalents, including amounts restricted, at end of period	$ 8,833	$ 10,119