Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 3,074	$ 2,702
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	476	376
Realized capital gains and losses	(1,183)	(17)
Pension and other postretirement remeasurement gains and losses	365	(32)
Gain on disposition of operations	(3)	(4)
Interest credited to contractholder funds	487	489
Impairment of purchased intangibles	55	0
Changes in:
Policy benefits and other insurance reserves	29	90
Unearned premiums	813	785
Deferred policy acquisition costs	(66)	(203)
Premium installment receivables, net	(392)	(422)
Reinsurance recoverables, net	167	(103)
Income taxes	254	(178)
Other operating assets and liabilities	(181)	335
Net cash provided by operating activities	3,895	3,818
Proceeds from sales
Fixed income securities	23,075	26,223
Equity securities	3,735	4,637
Limited partnership interests	557	490
Other investments	279	234
Investment collections
Fixed income securities	1,847	2,388
Mortgage loans	451	378
Other investments	203	370
Investment purchases
Fixed income securities	(23,536)	(29,049)
Equity securities	(6,080)	(4,791)
Limited partnership interests	(989)	(1,317)
Mortgage loans	(475)	(435)
Other investments	(548)	(686)
Change in short-term investments, net	(1,509)	(665)
Change in other investments, net	66	(28)
Purchases of property and equipment, net	(293)	(195)
Acquisition of operations	(18)	(10)
Net cash used in investing activities	(3,235)	(2,456)
Cash flows from financing activities
Proceeds from issuance of long-term debt	491	498
Redemption and repayment of long-term debt	(317)	(401)
Proceeds from issuance of preferred stock	1,122	557
Contractholder fund deposits	751	756
Contractholder fund withdrawals	(1,278)	(1,474)
Dividends paid on common stock	(490)	(455)
Dividends paid on preferred stock	(92)	(97)
Treasury stock purchases	(936)	(1,062)
Shares reissued under equity incentive plans, net	98	66
Other	79	93
Net cash used in financing activities	(572)	(1,519)
Net increase (decrease) in cash	88	(157)
Cash at beginning of period	499	617
Cash at end of period	$ 587	$ 460

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