Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ (27)	$ 143
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	617	387
Stock-based compensation expense	22	19
Impairment of long-lived assets and hospitals held for sale	46
Loss from early extinguishment of debt	73	1
Excess tax benefit relating to stock-based compensation	(3)	(6)
Other non-cash expenses, net	19	27
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Patient accounts receivable	(166)	(106)
Supplies, prepaid expenses and other current assets	38	15
Accounts payable, accrued liabilities and income taxes	(55)	(180)
Other	(50)	9
Net cash provided by operating activities	514	309
Cash flows from investing activities:
Acquisitions of facilities and other related equipment	(3,041)	(10)
Purchases of property and equipment	(361)	(295)
Proceeds from disposition of ancillary operations	12
Proceeds from sale of property and equipment	3	2
Purchases of available-for-sale securities	(137)
Proceeds from sales of available-for-sale securities	123
Increase in other investments	(251)	(135)
Net cash used in investing activities	(3,652)	(438)
Cash flows from financing activities:
Proceeds from exercise of stock options	14	104
Repurchase of restricted stock shares for payroll tax withholding requirements	(11)	(15)
Stock buy-back		(27)
Deferred financing costs and other debt-related costs	(269)	(1)
Excess tax benefit relating to stock-based compensation	3	6
Proceeds from noncontrolling investors in joint ventures	10
Redemption of noncontrolling investments in joint ventures	(6)
Distributions to noncontrolling investors in joint ventures	(44)	(38)
Borrowings under credit agreements	7,488	296
Issuance of long-term debt	4,000
Proceeds from receivables facility	133	300
Repayments of long-term indebtedness	(8,164)	(633)
Net cash provided by (used in) financing activities	3,154	(8)
Net change in cash and cash equivalents	16	(137)
Cash and cash equivalents at beginning of period	373	388
Cash and cash equivalents at end of period	389	251
Supplemental disclosure of cash flow information:
Interest payments	(352)	(296)
Income tax (paid), net of refunds received	$ 73	$ (70)