Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net earnings	$ 566	$ 928
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums	15	35
Capitalization of deferred policy acquisition costs	(325)	(357)
Amortization of deferred policy acquisition costs	333	340
Increase in policy liabilities	368	468
Change in income tax liabilities	153	316
Realized investment (gains) losses	463	(71)
Other, net	(159)	(115)
Net cash provided (used) by operating activities	1,414	1,544
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	726	760
Equity securities	3	153
Held-to-maturity fixed maturity securities	0	155
Commercial mortgage and other loans	408	493
Costs of investments acquired:
Available for sale fixed maturity securities	(1,817)	(2,548)
Equity securities	(6)	(151)
Commercial mortgage and other loans	(1,787)	(669)
Other investments, net	(361)	(442)
Settlement of derivatives, net	13	(3)
Cash received (pledged or returned) as collateral, net	1,160	976
Other, net	(55)	(15)
Net cash provided (used) by investing activities	(1,716)	(1,291)
Cash flows from financing activities:
Purchases of treasury stock	(449)	(490)
Proceeds from borrowings	545	0
Principal payments under debt obligations	(350)	0
Dividends paid to shareholders	(195)	(195)
Change in investment-type contracts, net	(5)	(13)
Treasury stock reissued	9	12
Other, net	(1)	0
Net cash provided (used) by financing activities	(446)	(686)
Effect of exchange rate changes on cash and cash equivalents	0	(12)
Net change in cash and cash equivalents	(748)	(445)
Cash and cash equivalents, beginning of period	4,896	4,337
Cash and cash equivalents, end of period	4,148	3,892
Supplemental disclosures of cash flow information:
Income taxes paid	2	(2)
Interest paid	39	36
Noncash interest	15	22
Noncash financing activities:
Lease obligations	13	1
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	5	6
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	7	8
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 5	$ 4