Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities
Net earnings	$ 1,627	$ 1,413
Noncash items:
Depreciation and amortization	502	378
Deferred income taxes	145	122
Share-based compensation	157	125
Other, net	6	(44)
Net change in other operating items, net of effects from acquisitions and changes in AARP balances:
Accounts receivable	(1,110)	(758)
Other assets	(2,162)	(2,162)
Medical costs payable	1,368	1,610
Accounts payable and other liabilities	1,770	1,648
Other policy liabilities	266	154
Unearned revenues	(251)	(217)
Cash flows from operating activities	2,318	2,269
Investing activities
Purchases of investments	(5,173)	(1,891)
Sales of investments	2,122	503
Maturities of investments	978	843
Cash paid for acquisitions, net of cash assumed	(1,697)	(575)
Purchases of property, equipment and capitalized software	(425)	(373)
Other, net	14	(32)
Cash flows used for investing activities	(4,181)	(1,525)
Financing activities
Common stock repurchases	(500)	(896)
Cash dividends paid	(477)	(357)
Proceeds from common stock issuances	198	192
Proceeds from long-term debt	2,485	0
Repayments of long-term debt	(601)	(416)
(Repayments of) proceeds from commercial paper, net	(285)	1,194
Customer funds administered	1,067	1,049
Other, net	(385)	(270)
Cash flows from financing activities	1,502	496
Effect of exchange rate changes on cash and cash equivalents	34	(85)
(Decrease) increase in cash and cash equivalents	(327)	1,155
Cash and cash equivalents, beginning of period	10,923	7,495
Cash and Cash Equivalents, end of period	$ 10,596	$ 8,650