Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net earnings	$ 1,550	$ 1,305
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums	(1)	8
Capitalization of deferred policy acquisition costs	(716)	(693)
Amortization of deferred policy acquisition costs	617	577
Increase in policy liabilities	1,346	1,326
Change in income tax liabilities	(180)	368
Realized investment (gains) losses	131	196
Other, net	60	78
Net cash provided (used) by operating activities	2,807	3,165
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	3,869	2,574
Equity securities, FV-NI	216
Equity securities, available-for-sale		157
Held-to-maturity fixed maturity securities	878	1,311
Other investments - loan receivables	358	90
Costs of investments acquired:
Available for sale fixed maturity securities	(6,798)	(5,662)
Equity securities, FV-NI	(233)
Equity securities, available-for-sale		(178)
Other investments - loan receivables	(2,705)	(492)
Other investments, excluding loan receivables, net	(175)	(112)
Settlement of derivatives, net	(36)	(34)
Cash received (pledged or returned) as collateral, net	3,110	(129)
Other, net	73	(42)
Net cash provided (used) by investing activities	(1,443)	(2,517)
Cash flows from financing activities:
Purchases of treasury stock	(601)	(813)
Proceeds from borrowings	0	524
Principal payments under debt obligations	0	(656)
Dividends paid to shareholders	(396)	(328)
Change in investment-type contracts, net	9	23
Treasury stock reissued	12	17
Other, net	(12)	2
Net cash provided (used) by financing activities	(988)	(1,231)
Effect of exchange rate changes on cash and cash equivalents	(20)	(12)
Net change in cash and cash equivalents	356	(595)
Cash and cash equivalents, beginning of period	3,491	4,859
Cash and cash equivalents, end of period	3,847	4,264
Supplemental disclosures of cash flow information:
Income taxes paid	744	293
Interest paid	90	103
Noncash interest	21	19
Impairment losses included in realized investment losses	12
Impairment losses included in realized investment losses		19
Noncash financing activities:
Capital lease obligations	10	3
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	5	16
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	8	16
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 2	$ 1