CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Consolidated net income	$ 395	$ 297
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	347	328
Deferred income tax expense (benefit)	(15)	36
Interest accretion on landfill liabilities	23	22
Provision for bad debts	12	11
Equity-based compensation expense	23	36
Net gain on disposal of assets	(5)	(3)
(Income) expense from divestitures, asset impairments and other, net	(3)	22
Equity in net losses of unconsolidated entities, net of dividends	7	7
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Receivables	183	151
Other current assets	(8)	(8)
Other assets	(1)	(6)
Accounts payable and accrued liabilities	(119)	(144)
Deferred revenues and other liabilities	(30)	(27)
Net cash provided by operating activities	809	722
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(246)	(8)
Capital expenditures	(400)	(332)
Proceeds from divestitures of businesses and other assets (net of cash divested)	14	7
Other, net	(5)	(4)
Net cash used in investing activities	(637)	(337)
Cash flows from financing activities:
New borrowings	61	54
Debt repayments	(80)	(541)
Net commercial paper borrowings	471	210
Common stock repurchase program	(250)
Cash dividends	(206)	(194)
Exercise of common stock options	23	77
Tax payments associated with equity-based compensation transactions	(28)	(32)
Other, net	(29)	41
Net cash used in financing activities	(38)	(385)
Effect of exchange rate changes on cash, cash equivalents and restricted cash and cash equivalents	(1)
Increase in cash, cash equivalents and restricted cash and cash equivalents	133
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period	293	94
Cash, cash equivalents and restricted cash and cash equivalents at end of period	$ 426	$ 94