Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 1,385	$ 1,086
Decrease in cash from operating assets and liabilities:
Accounts receivable	(1,784)	(1,827)
Provision for doubtful accounts	1,681	1,579
Accounts receivable, net	(103)	(248)
Inventories and other assets	(195)	(219)
Accounts payable and accrued expenses	(117)	(105)
Depreciation and amortization	942	901
Income taxes	(101)	(94)
Gains on sales of facilities	(4)	(32)
Losses on retirement of debt	125	226
Legal claim costs		78
Amortization of debt issuance costs	19	23
Share-based compensation	103	77
Other	21
Net cash provided by operating activities	2,075	1,693
Cash flows from investing activities:
Purchase of property and equipment	(1,004)	(913)
Acquisition of hospitals and health care entities	(95)	(27)
Disposal of hospitals and health care entities	22	32
Change in investments	67	43
Other	1	1
Net cash used in investing activities	(1,009)	(864)
Cash flows from financing activities:
Issuances of long-term debt	4,048	3,502
Net change in revolving bank credit facilities	(300)	340
Repayment of long-term debt	(3,644)	(3,482)
Distributions to noncontrolling interests	(237)	(197)
Payment of debt issuance costs	(33)	(49)
Repurchases of common stock	(940)	(750)
Income tax benefits	197	75
Other	(50)	(24)
Net cash used in financing activities	(959)	(585)
Change in cash and cash equivalents	107	244
Cash and cash equivalents at beginning of period	566	414
Cash and cash equivalents at end of period	673	658
Interest payments	810	899
Income tax payments, net	$ 581	$ 517