Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Consolidated net income	$ 297	$ 256
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	328	312
Deferred income tax expense	36	32
Interest accretion on landfill liabilities	22	22
Interest accretion on and discount rate adjustments to environmental remediation liabilities and recovery assets	1	1
Provision for bad debts	11	11
Equity-based compensation expense	36	30
Net gain from disposal of assets	(3)	(5)
(Income) expense from divestitures, asset impairments and other, net	22	(1)
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	151	111
Other current assets	(8)	(11)
Other assets	(7)	75
Accounts payable and accrued liabilities	(144)	(89)
Deferred revenues and other liabilities	(28)	(19)
Net cash provided by operating activities	721	732
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(10)	(537)
Capital expenditures	(332)	(317)
Proceeds from divestitures of businesses and other assets (net of cash divested)	7	13
Other, net	(5)	(6)
Net cash used in investing activities	(340)	(847)
Cash flows from financing activities:
New borrowings	54	1,301
Debt repayments	(541)	(647)
Net commercial paper borrowings	210
Common stock repurchase program		(250)
Cash dividends	(194)	(183)
Exercise of common stock options	77	18
Tax payments associated with equity-based compensation transactions	(32)	(19)
Other, net	43	(40)
Net cash provided by (used in) financing activities	(383)	180
Effect of exchange rate changes on cash and cash equivalents	0	0
Increase (decrease) in cash and cash equivalents	(2)	65
Cash and cash equivalents at beginning of period	32	39
Cash and cash equivalents at end of period	$ 30	$ 104