CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net income	$ 34	$ 76
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	212	207
Provision for doubtful accounts	376	363
Deferred income tax expense	31	12
Stock-based compensation expense	16	15
Impairment and restructuring charges, and acquisition-related costs	28	29
Litigation and investigation costs	173	3
Gains on sales, consolidation and deconsolidation of facilities	(147)
Equity in earnings of unconsolidated affiliates, net of distributions received	12	(4)
Amortization of debt discount and debt issuance costs	10	7
Pre-tax loss (income) from discontinued operations	5	(2)
Other items, net	2	(4)
Changes in cash from operating assets and liabilities:
Accounts receivable	(453)	(484)
Inventories and other current assets	(18)	(74)
Income taxes	28	8
Accounts payable, accrued expenses and other current liabilities	(114)	(200)
Other long-term liabilities	24	28
Payments for restructuring charges, acquisition-related costs, and litigation costs and settlements	(69)	(33)
Net cash used in operating activities from discontinued operations, excluding income taxes	(3)	(4)
Net cash provided by (used in) operating activities	147	(57)
Cash flows from investing activities:
Purchases of property and equipment - continuing operations	(208)	(184)
Purchases of businesses or joint venture interests, net of cash acquired	(29)	(11)
Proceeds from sales of facilities and other assets	573
Proceeds from sales of marketable securities, long-term investments and other assets	12	6
Purchases of equity investments	(18)
Other long-term assets	(10)	2
Net cash provided by (used in) investing activities	320	(187)
Cash flows from financing activities:
Repayments of borrowings under credit facility	(995)	(690)
Proceeds from borrowings under credit facility	995	820
Repayments of other borrowings	(38)	(32)
Proceeds from other borrowings	1	401
Debt issuance costs		(4)
Distributions paid to noncontrolling interests	(44)	(11)
Contributions from noncontrolling interests		2
Purchase of noncontrolling interest		(254)
Proceeds from exercise of stock options		7
Other items, net	(14)	(3)
Net cash provided by (used in) financing activities	(95)	236
Net increase (decrease) in cash and cash equivalents	372	(8)
Cash and cash equivalents at beginning of period	356	193
Cash and cash equivalents at end of period	728	185
Supplemental disclosures:
Interest paid, net of capitalized interest	(132)	(117)
Income tax payments, net	$ (6)	$ 1