Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net (loss) income	$ (321)	$ 650
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	177	236
Net (gains) losses on investments and derivatives	(14)	267
Pension and other postretirement remeasurement (gains) losses	(53)	(247)
Changes in:
Policy benefits and other insurance reserves	1,080	(111)
Unearned premiums	199	390
Deferred policy acquisition costs	(29)	(103)
Premium installment receivables, net	(317)	(502)
Reinsurance recoverables, net	91	333
Income taxes	(125)	93
Other operating assets and liabilities	(87)	(574)
Net cash provided by operating activities	601	432
Proceeds from sales
Fixed income securities	7,008	12,400
Equity securities	3,739	5,216
Limited partnership interests	414	300
Other investments	55	208
Investment collections
Fixed income securities	646	104
Mortgage loans	22	3
Other investments	25	49
Investment purchases
Fixed income securities	(8,424)	(13,220)
Equity securities	(1,187)	(3,624)
Limited partnership interests	(226)	(216)
Mortgage loans	(41)	(37)
Other investments	(73)	(186)
Change in short-term and other investments, net	(2,675)	114
Purchases of property and equipment, net	(79)	(130)
Net cash (used in) provided by investing activities	(796)	981
Cash flows from financing activities
Proceeds from issuance of long-term debt	744	0
Redemption and repayment of debt	(250)	0
Contractholder fund deposits	33	34
Contractholder fund withdrawals	(9)	(9)
Dividends paid on common stock	(224)	(230)
Dividends paid on preferred stock	(26)	(26)
Treasury stock purchases	(153)	(802)
Shares reissued under equity incentive plans, net	6	17
Other	0	(30)
Net cash provided by (used in) financing activities	121	(1,046)
Net (decrease) increase in cash	(74)	367
Cash at beginning of period	736	763
Cash at end of period	$ 662	$ 1,130