CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Consolidated net income	$ 347	$ 395
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	366	347
Deferred income tax expense (benefit)	1	(15)
Interest accretion on landfill liabilities	23	23
Provision for bad debts	10	12
Equity-based compensation expense	27	23
Net gain on disposal of assets	(2)	(5)
(Gain) loss from divestitures, asset impairments and other, net	55	(3)
Equity in net losses of unconsolidated entities, net of dividends	9	7
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Receivables	212	183
Other current assets	(9)	(8)
Other assets	(3)	(1)
Accounts payable and accrued liabilities	(117)	(119)
Deferred revenues and other liabilities	(29)	(30)
Net cash provided by operating activities	890	809
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(394)	(246)
Capital expenditures	(471)	(400)
Proceeds from divestitures of businesses and other assets (net of cash divested)	12	14
Other, net	53	(5)
Net cash used in investing activities	(800)	(637)
Cash flows from financing activities:
New borrowings		61
Debt repayments	(56)	(80)
Net commercial paper borrowings	357	471
Common stock repurchase program	(68)	(250)
Cash dividends	(223)	(206)
Exercise of common stock options	25	23
Tax payments associated with equity-based compensation transactions	(30)	(28)
Other, net	37	(29)
Net cash provided by (used in) financing activities	42	(38)
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	132	133
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period	183	293
Cash, cash equivalents and restricted cash and cash equivalents at end of period	$ 315	$ 426