CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net income (loss)	$ (90)	$ 79
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	354	314
Provision for doubtful accounts	624	585
Deferred income tax expense (benefit)	(60)	58
Stock-based compensation expense	26	24
Impairment and restructuring charges, and acquisition-related costs	45	12
Litigation and investigation costs	3	3
Loss from early extinguishment of debt	348	0
Amortization of debt discount and debt issuance costs	12	16
Pre-tax loss from discontinued operations	7	92
Other items, net	(19)	(7)
Changes in cash from operating assets and liabilities:
Accounts receivable	(662)	(653)
Inventories and other current assets	(159)	(106)
Income taxes	(5)	(2)
Accounts payable, accrued expenses and other current liabilities	(44)	(23)
Other long-term liabilities	(5)	20
Payments for restructuring charges, acquisition-related costs, and litigation costs and settlements	(36)	(56)
Net cash used in operating activities from discontinued operations, excluding income taxes	(5)	(19)
Net cash provided by operating activities	334	337
Cash flows from investing activities:
Purchases of property and equipment - continuing operations	(398)	(358)
Purchases of property and equipment - discontinued operations	0	(2)
Purchases of businesses or joint venture interests	(142)	(38)
Proceeds from sales of facilities and other assets - discontinued operations	11	45
Proceeds from sales of marketable securities, long-term investments and other assets	6	9
Other long-term assets	11	(5)
Other items, net	3	3
Net cash used in investing activities	(509)	(346)
Cash flows from financing activities:
Repayments of borrowings under credit facility	(1,001)	(1,458)
Proceeds from borrowing under credit facility	1,211	1,553
Repayments of other borrowings	(1,987)	(76)
Proceeds from other borrowings	1,907	292
Repurchases of preferred stock	0	(292)
Deferred debt issuance costs	(31)	(3)
Repurchases of common stock	(300)	(26)
Cash dividends on preferred stock	0	(13)
Distributions paid to noncontrolling interests	(18)	(9)
Contributions from noncontrolling interests	98	3
Proceeds from exercise of stock options	22	5
Other items, net	(8)	3
Net cash used in financing activities	(107)	(21)
Net decrease in cash and cash equivalents	(282)	(30)
Cash and cash equivalents at beginning of period	364	113
Cash and cash equivalents at end of period	82	83
Supplemental disclosures:
Interest paid, net of capitalized interest	(295)	(288)
Income tax payments, net	$ (5)	$ (9)