Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income (loss)	$ 646	$ (1,387)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	236	260
Net (gains) losses on investments and derivatives	267	(505)
Pension and other postretirement remeasurement (gains) losses	(247)	(310)
Amortization of deferred gain on reinsurance	0	(2)
Interest credited to contractholder funds	8	94
Loss on disposition of operations, net of tax	0	3,998
Changes in:
Accident, health and other policy benefits	(121)	817
Unearned premiums	392	33
Deferred policy acquisition costs	(99)	(26)
Premium installment receivables, net	(502)	(124)
Reinsurance recoverables, net	334	(1,201)
Income taxes	92	181
Other operating assets and liabilities	(574)	(440)
Net cash provided by operating activities	432	1,388
Proceeds from sales
Fixed income securities	12,400	10,290
Equity securities	5,216	992
Limited partnership interests	300	152
Other investments	208	328
Investment collections
Fixed income securities	104	737
Mortgage loans	3	134
Other investments	49	109
Investment purchases
Fixed income securities	(13,220)	(7,968)
Equity securities	(3,624)	(539)
Limited partnership interests	(216)	(322)
Mortgage loans	(37)	0
Other investments	(186)	(603)
Change in short-term and other investments, net	114	744
Purchases of property and equipment, net	(130)	(61)
Acquisition of operations, net of cash acquired	0	(3,480)
Net cash provided by investing activities	981	513
Cash flows from financing activities
Redemption and repayment of long-term debt	0	(422)
Redemption of preferred stock	0	(250)
Contractholder fund deposits	34	252
Contractholder fund withdrawals	(9)	(374)
Dividends paid on common stock	(230)	(164)
Dividends paid on preferred stock	(26)	(27)
Treasury stock purchases	(802)	(467)
Shares reissued under equity incentive plans, net	17	4
Other	(30)	(32)
Net cash used in financing activities	(1,046)	(1,480)
Net increase in cash, including cash classified as assets held for sale	367	421
Cash from continuing operations at beginning of period	763	311
Cash classified as assets held for sale at beginning of period	0	66
Less: Cash classified as assets held for sale at end of period	0	89
Cash from continuing operations at end of period	$ 1,130	$ 709