Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net income	$ 1,523	$ 1,551
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized losses (gains) on financial instruments	24	(78)
Depreciation and amortization	270	289
Deferred income taxes	57	55
Share-based compensation	67	70
Changes in operating assets and liabilities:
Receivables, net	(639)	(753)
Other invested assets	63	(21)
Other assets	(525)	(125)
Policy liabilities	692	791
Unearned income	(109)	96
Accounts Payable and Other Operating Liabilities	588	(354)
Income taxes	491	115
Other, net	13	(6)
Net cash provided by operating activities	2,515	1,630
Investing activities
Payments to acquire investments	3,896	6,069
Proceeds from sale of investments	2,728	5,236
Maturities, calls and redemptions from investments	597	393
Purchases of subsidiaries, net of cash acquired	(1,908)	0
Purchases of property and equipment	(204)	(234)
Other, net	(101)	22
Net cash used in investing activities	(2,784)	(652)
Financing activities
Net proceeds from commercial paper borrowings	905	178
Proceeds from long-term borrowings	300	2
Repayments of long-term borrowings	(52)	(63)
Proceeds from short-term borrowings	1,075	2,710
Repayments of short-term borrowings	(700)	(2,760)
Repurchase and retirement of common stock	(529)	(294)
Cash dividends	(240)	(206)
Proceeds from issuance of common stock under employee stock plans	44	76
Taxes paid through withholding of common stock under employee stock plans	(107)	(78)
Other, net	(17)	6
Net cash provided by (used in) financing activities	679	(429)
Effect of foreign exchange rates on cash and cash equivalents	(2)	(1)
Change in cash and cash equivalents	408	548
Cash and cash equivalents at beginning of period	4,937	3,934
Cash and cash equivalents at end of period	$ 5,345	$ 4,482