Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net income	$ 560	$ 1,353
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized investment (gains) losses	85	(78)
Depreciation and amortization	391	401
Deferred federal income tax expense (benefit)	(71)	10
Amortization of deferred acquisition costs	2,351	2,251
Equity in (income) loss from other investments	186	(132)
Premiums receivable	(571)	(779)
Reinsurance recoverables	60	151
Deferred acquisition costs	(2,453)	(2,408)
Claims and claim adjustment expense reserves	1,455	329
Unearned premium reserves	643	958
Other operating activities	(344)	(264)
Net cash provided by operating activities	2,292	1,792
Cash flows from investing activities
Proceeds from maturities of fixed maturities	3,071	3,038
Proceeds from sales of investments:
Fixed maturities	1,220	1,495
Equity securities	54	71
Other investments	139	240
Purchases of investments:
Fixed maturities	(4,790)	(5,708)
Equity securities	(59)	(41)
Real estate investments	(24)	(85)
Other investments	(228)	(262)
Net sales (purchases) of short-term securities	(1,147)	497
Securities transactions in course of settlement	94	223
Other investing activities	(144)	(169)
Net cash used in investing activities	(1,814)	(701)
Cash flows from financing activities
Treasury stock acquired — share repurchase authorization	(425)	(750)
Treasury stock acquired — net employee share-based compensation	(46)	(47)
Dividends paid to shareholders	(426)	(419)
Payment of debt	0	(500)
Issuance of debt	490	492
Issuance of common stock — employee share options	65	174
Net cash used in financing activities	(342)	(1,050)
Effect of exchange rate changes on cash	(7)	2
Net increase in cash	129	43
Cash at beginning of year	494	373
Cash at end of period	623	416
Supplemental disclosure of cash flow information
Income taxes paid	17	325
Interest paid	$ 166	$ 171