Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net income	$ 775	$ 2,952
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	818	500
Realized capital (gains) losses	(1,011)	(682)
Pension and other postretirement remeasurement (gains) losses	(404)	320
Amortization of deferred gain on reinsurance	(5)	(3)
Interest credited to contractholder funds	396	482
Loss on disposition of operations, net of tax	3,754	0
Changes in:
Policy benefits and other insurance reserves	2,375	(73)
Unearned premiums	1,490	710
Deferred policy acquisition costs	(492)	(55)
Premium installment receivables, net	(606)	(153)
Reinsurance recoverables, net	(1,973)	121
Income taxes	31	(617)
Other operating assets and liabilities	(903)	670
Net cash provided by operating activities	4,245	4,172
Proceeds from sales
Fixed income securities	22,610	25,567
Equity securities	3,151	7,544
Limited partnership interests	574	991
Other investments	696	209
Investment collections
Fixed income securities	1,965	1,676
Mortgage loans	747	278
Other investments	421	158
Investment purchases
Fixed income securities	(22,682)	(31,743)
Equity securities	(1,790)	(3,882)
Limited partnership interests	(927)	(796)
Mortgage loans	(97)	(197)
Other investments	(1,470)	(299)
Change in short-term and other investments, net	854	(515)
Purchases of property and equipment, net	(286)	(235)
Acquisition of operations, net of cash acquired	(3,481)	1
Other	4	0
Net cash provided by (used in) investing activities	289	(1,243)
Cash flows from financing activities
Redemption and repayment of long-term debt	(422)	0
Redemption of preferred stock	(450)	(288)
Contractholder fund deposits	741	749
Contractholder fund withdrawals	(1,036)	(1,151)
Dividends paid on common stock	(650)	(500)
Dividends paid on preferred stock	(87)	(82)
Treasury stock purchases	(2,257)	(1,737)
Shares reissued under equity incentive plans, net	108	54
Other	(12)	58
Net cash used in financing activities	(4,065)	(2,897)
Net increase in cash, including cash classified as assets held for sale	469	32
Cash from continuing operations at beginning of period	311	273
Cash classified as assets held for sale at beginning of period	66	65
Less: Cash classified as assets held for sale at end of period	156	66
Cash from continuing operations at end of period	$ 690	$ 304