Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net earnings	$ 13,541	$ 13,417
Noncash items:
Depreciation and amortization	2,332	2,159
Deferred income taxes	373	119
Share-based compensation	591	527
Other, net	(195)	48
Net change in other operating items, net of effects from acquisitions and changes in AARP balances:
Accounts receivable	(847)	(194)
Other assets	(1,435)	(2,697)
Medical costs payable	3,925	(615)
Accounts payable and other liabilities	1,171	3,441
Unearned revenues	(331)	(132)
Cash flows from operating activities	19,125	16,073
Investing activities
Purchases of investments	(12,827)	(11,570)
Sales of investments	2,569	4,887
Maturities of investments	6,556	5,297
Cash paid for acquisitions, net of cash assumed	(4,727)	(4,326)
Purchases of property, equipment and capitalized software	(1,759)	(1,477)
Other, net	(900)	(165)
Cash flows used for investing activities	(11,088)	(7,354)
Financing activities
Common share repurchases	(3,950)	(2,541)
Cash dividends paid	(3,915)	(3,400)
Proceeds from common stock issuances	1,077	1,206
Repayments of long-term debt	(1,900)	(1,500)
Repayments of short-term borrowings, net	(1,301)	(423)
Proceeds from issuance of long-term debt	6,934	4,864
Customer funds administered	1,402	249
Purchases of redeemable noncontrolling interests	(1,338)	0
Other, net	(837)	(449)
Cash flows used for financing activities	(3,828)	(1,994)
Effect of exchange rate changes on cash and cash equivalents	(45)	(160)
Increase in cash and cash equivalents	4,164	6,565
Cash and cash equivalents, beginning of period	16,921	10,985
Cash and cash equivalents, end of period	$ 21,085	$ 17,550