CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net income	$ 153	$ 76
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	632	589
Provision for doubtful accounts	1,095	1,086
Deferred income tax expense (benefit)	32	(10)
Stock-based compensation expense	51	50
Impairment and restructuring charges, and acquisition-related costs	81	266
Litigation and investigation costs	291	67
Gains on sales, consolidation and deconsolidation of facilities	(151)
Equity in earnings of unconsolidated affiliates, net of distributions received	2	(48)
Amortization of debt discount and debt issuance costs	33	32
Pre-tax loss from discontinued operations	5	1
Other items, net	(3)	22
Changes in cash from operating assets and liabilities:
Accounts receivable	(1,156)	(1,124)
Inventories and other current assets	(95)	(62)
Income taxes	(1)	(5)
Accounts payable, accrued expenses and other current liabilities	(35)	39
Other long-term liabilities	48	31
Payments for restructuring charges, acquisition-related costs, and litigation costs and settlements	(132)	(157)
Net cash provided by (used in) operating activities from discontinued operations, excluding income taxes	1	(18)
Net cash provided by operating activities	851	835
Cash flows from investing activities:
Purchases of property and equipment - continuing operations	(614)	(566)
Purchases of businesses or joint venture interests, net of cash acquired	(96)	(720)
Proceeds from sales of facilities and other assets	573	28
Proceeds from sales of marketable securities, long-term investments and other assets	36	18
Purchases of equity investments	(37)	(18)
Other long-term assets	(15)	(6)
Other items, net	3	(8)
Net cash used in investing activities	(150)	(1,272)
Cash flows from financing activities:
Repayments of borrowings under credit facility	(1,195)	(1,880)
Proceeds from borrowings under credit facility	1,195	1,770
Repayments of other borrowings	(112)	(2,011)
Proceeds from other borrowings	4	3,208
Debt issuance costs	(1)	(76)
Distributions paid to noncontrolling interests	(151)	(65)
Proceeds from sale of noncontrolling interests	19	4
Purchase of noncontrolling interest	(180)	(254)
Proceeds from exercise of stock options	4	15
Other items, net	9	(17)
Net cash provided by (used in) financing activities	(408)	694
Net increase in cash and cash equivalents	293	257
Cash and cash equivalents at beginning of period	356	193
Cash and cash equivalents at end of period	649	450
Supplemental disclosures:
Interest paid, net of capitalized interest	(596)	(519)
Income tax payments, net	$ (33)	$ (6)