Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net income	$ 244	$ 1,799
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	571	318
Realized capital (gains) losses	(902)	(242)
Pension and other postretirement remeasurement (gains) losses	(444)	391
Amortization of deferred gain on reinsurance	(4)	(2)
Interest credited to contractholder funds	261	332
Loss on disposition of operations, net of tax	3,971	0
Changes in:
Policy benefits and other insurance reserves	854	(594)
Unearned premiums	599	143
Deferred policy acquisition costs	(273)	(42)
Premium installment receivables, net	(335)	81
Reinsurance recoverables, net	(1,032)	(56)
Income taxes	165	257
Other operating assets and liabilities	(759)	491
Net cash provided by operating activities	2,916	2,876
Proceeds from sales
Fixed income securities	16,493	19,952
Equity securities	1,867	6,473
Limited partnership interests	352	862
Other investments	637	135
Investment collections
Fixed income securities	1,390	1,054
Mortgage loans	480	156
Other investments	243	81
Investment purchases
Fixed income securities	(16,733)	(24,214)
Equity securities	(1,322)	(2,907)
Limited partnership interests	(576)	(513)
Mortgage loans	(4)	(196)
Other investments	(1,251)	(199)
Change in short-term and other investments, net	1,941	(1,477)
Purchases of property and equipment, net	(197)	(166)
Acquisition of operations, net of cash acquired	(3,481)	1
Other	4	0
Net cash used in investing activities	(157)	(958)
Cash flows from financing activities
Redemption and repayment of long-term debt	(422)	0
Redemption of preferred stock	(250)	(288)
Contractholder fund deposits	499	494
Contractholder fund withdrawals	(711)	(791)
Dividends paid on common stock	(409)	(331)
Dividends paid on preferred stock	(57)	(56)
Treasury stock purchases	(1,031)	(821)
Shares reissued under equity incentive plans, net	85	52
Other	(26)	32
Net cash used in financing activities	(2,322)	(1,709)
Net increase in cash, including cash classified as assets held for sale	437	209
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	158	66
Cash from continuing operations at end of period	$ 656	$ 481