Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net earnings	$ 2,395	$ 2,021
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums	(27)	(32)
Capitalization of deferred policy acquisition costs	(1,082)	(1,077)
Amortization of deferred policy acquisition costs	932	848
Increase in policy liabilities	1,821	2,137
Change in income tax liabilities	38	323
Realized investment (gains) losses	76	166
Other, net	506	210
Net cash provided (used) by operating activities	4,659	4,596
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	5,991	3,382
Equity securities, FV-NI	369
Equity securities, available for sale		755
Held-to-maturity fixed maturity securities	880	1,714
Other investments - loan receivables	597	134
Costs of investments acquired:
Available for sale fixed maturity securities	(7,845)	(6,827)
Equity securities, FV-NI	(338)
Equity securities, available-for-sale		(391)
Other investments - loan receivables	(4,150)	(916)
Other investments, excluding loan receivables, net	(136)	(167)
Settlement of derivatives, net	(141)	(240)
Cash received (pledged or returned) as collateral, net	1,413	(273)
Other, net	188	(58)
Net cash provided (used) by investing activities	(3,172)	(2,887)
Cash flows from financing activities:
Purchases of treasury stock	(923)	(1,053)
Proceeds from borrowings	0	524
Principal payments under debt obligations	0	(660)
Dividends paid to shareholders	(595)	(491)
Change in investment-type contracts, net	(17)	39
Treasury stock reissued	36	23
Other, net	(14)	5
Net cash provided (used) by financing activities	(1,513)	(1,613)
Effect of exchange rate changes on cash and cash equivalents	(36)	(28)
Net change in cash and cash equivalents	(62)	68
Cash and cash equivalents, beginning of period	3,491	4,859
Cash and cash equivalents, end of period	3,429	4,927
Supplemental disclosures of cash flow information:
Income taxes paid	827	693
Interest paid	124	144
Noncash interest	41	38
Impairment losses included in realized investment losses	17
Impairment losses included in realized investment losses		27
Noncash financing activities:
Capital lease obligations	10	7
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	7	22
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	8	22
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 2	$ 1