Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net earnings	$ 1,745	$ 1,550
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums	(17)	(1)
Capitalization of deferred policy acquisition costs	(712)	(716)
Amortization of deferred policy acquisition costs	649	617
Increase in policy liabilities	1,019	1,346
Change in income tax liabilities	(268)	(180)
Realized investment (gains) losses	(5)	131
Other, net	(54)	60
Net cash provided (used) by operating activities	2,357	2,807
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	2,105	3,869
Equity securities	154	216
Held-to-maturity fixed maturity securities	203	878
Commercial mortgage and other loans	888	358
Costs of investments acquired:
Available for sale fixed maturity securities	(4,352)	(6,798)
Equity securities	(181)	(233)
Commercial mortgage and other loans	(1,534)	(2,705)
Other investments, net	(616)	(175)
Settlement of derivatives, net	(14)	(36)
Cash received (pledged or returned) as collateral, net	495	3,110
Other, net	125	73
Net cash provided (used) by investing activities	(2,727)	(1,443)
Cash flows from financing activities:
Purchases of treasury stock	(847)	(601)
Proceeds from borrowings	268	0
Dividends paid to shareholders	(389)	(396)
Change in investment-type contracts, net	(34)	9
Treasury stock reissued	26	12
Other, net	(2)	(12)
Net cash provided (used) by financing activities	(978)	(988)
Effect of exchange rate changes on cash and cash equivalents	30	(20)
Net change in cash and cash equivalents	(1,318)	356
Cash and cash equivalents, beginning of period	4,337	3,491
Cash and cash equivalents, end of period	3,019	3,847
Supplemental disclosures of cash flow information:
Income taxes paid	874	744
Interest paid	93	90
Noncash interest	22	21
Impairment losses and loan loss reserves included in realized investment losses	4	12
Noncash financing activities:
Lease obligations	1	10
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	8	5
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	14	8
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 5	$ 2