Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 11,981	$ 10,430
Short-term investments	3,509	2,845
Accounts receivable, net of allowances of $641 and $514	9,568	8,152
Other current receivables, net of allowances of $440 and $409	6,262	7,499
Assets under management	3,101	3,105
Prepaid expenses and other current assets	2,663	1,848
Total current assets	37,084	33,879
Long-term investments	28,341	23,868
Property, equipment and capitalized software, net of accumulated depreciation and amortization of $3,694 and $3,749	7,013	5,901
Goodwill	54,556	47,584
Other intangible assets, net of accumulated amortization of $4,309 and $3,847	8,489	8,541
Other assets	3,575	3,037
Total assets	139,058	122,810
Current liabilities:
Medical costs payable	17,871	16,391
Accounts payable and accrued liabilities	15,180	13,361
Commercial paper and current maturities of long-term debt	2,857	7,193
Unearned revenues	2,269	1,968
Other current liabilities	12,286	10,339
Total current liabilities	50,463	49,252
Long-term debt, less current maturities	28,835	25,777
Deferred income taxes	2,182	2,761
Other liabilities	5,556	4,831
Total liabilities	87,036	82,621
Commitments and contingencies (Note 12)
Redeemable noncontrolling interests	2,189	2,012
Equity:
Preferred stock, $0.001 par value - 10 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value - 3,000 shares authorized; 969 and 952 issued and outstanding	10	10
Additional paid-in capital	1,703	0
Retained earnings	48,730	40,945
Accumulated other comprehensive loss	(2,667)	(2,681)
Nonredeemable noncontrolling interest	2,057	(97)
Total equity	49,833	38,177
Total liabilities, redeemable noncontrolling interests and equity	$ 139,058	$ 122,810