Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net (loss) income	$ (98)	$ 96
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	302	192
Stock-based compensation expense	11	10
Impairment of long-lived assets and hospitals held for sale	42
Loss from early extinguishment of debt	73	1
Excess tax benefit relating to stock-based compensation	(3)	(5)
Other non-cash expenses, net	6	6
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Patient accounts receivable	(171)	(148)
Supplies, prepaid expenses and other current assets	14	(2)
Accounts payable, accrued liabilities and income taxes	(83)	(98)
Other	(28)	5
Net cash provided by operating activities	65	57
Cash flows from investing activities:
Acquisitions of facilities and other related equipment	(2,774)	(5)
Purchases of property and equipment	(181)	(113)
Proceeds from sale of property and equipment		1
Purchases of available-for-sale securities	(78)
Proceeds from sales of available-for-sale securities	76
Increase in other investments	(99)	(69)
Net cash used in investing activities	(3,056)	(186)
Cash flows from financing activities:
Proceeds from exercise of stock options	6	72
Repurchase of restricted stock shares for payroll tax withholding requirements	(11)	(14)
Stock buy-back		(19)
Deferred financing costs and other debt-related costs	(269)	(1)
Excess tax benefit relating to stock-based compensation	3	5
Redemption of noncontrolling investments in joint ventures	(5)
Distributions to noncontrolling investors in joint ventures	(19)	(15)
Borrowings under credit agreements	7,079	101
Issuance of long-term debt	4,000
Proceeds from receivables facility	133	300
Repayments of long-term indebtedness	(7,686)	(403)
Net cash provided by financing activities	3,231	26
Net change in cash and cash equivalents	240	(103)
Cash and cash equivalents at beginning of period	373	388
Cash and cash equivalents at end of period	613	285
Supplemental disclosure of cash flow information:
Interest payments	(280)	(150)
Income tax (paid), net of refunds received	$ 79	$ (1)