Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net earnings	$ 1,293	$ 566
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums	(19)	15
Capitalization of deferred policy acquisition costs	(262)	(325)
Amortization of deferred policy acquisition costs	311	333
Increase in policy liabilities	204	368
Change in income tax liabilities	331	153
Net investment (gains) losses	(307)	463
Other, net	(185)	(159)
Net cash provided (used) by operating activities	1,366	1,414
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	651	726
Equity securities	123	3
Commercial mortgage and other loans	725	408
Costs of investments acquired:
Available for sale fixed maturity securities	(2,475)	(1,817)
Equity securities	(126)	(6)
Commercial mortgage and other loans	(956)	(1,787)
Other investments, net	(201)	(361)
Settlement of derivatives, net	116	13
Cash received (pledged or returned) as collateral, net	1,206	1,160
Other, net	(32)	(55)
Net cash provided (used) by investing activities	(969)	(1,716)
Cash flows from financing activities:
Purchases of treasury stock	(650)	(449)
Proceeds from borrowings	400	545
Principal payments under debt obligations	0	(350)
Dividends paid to shareholders	(219)	(195)
Change in investment-type contracts, net	(12)	(5)
Treasury stock reissued	9	9
Other, net	2	(1)
Net cash provided (used) by financing activities	(470)	(446)
Effect of exchange rate changes on cash and cash equivalents	(78)	0
Net change in cash and cash equivalents	(151)	(748)
Cash and cash equivalents, beginning of period	5,141	4,896
Cash and cash equivalents, end of period	4,990	4,148
Supplemental disclosures of cash flow information:
Income taxes paid	(20)	2
Interest paid	35	39
Noncash interest	27	15
Noncash financing activities:
Lease obligations	20	13
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	7	5
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	8	7
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 4	$ 5