CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Consolidated net income	$ 729	$ 894
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	775	731
Deferred income tax expense (benefit)	(12)	(21)
Interest accretion on landfill liabilities	47	47
Provision for bad debts	19	22
Equity-based compensation expense	43	41
Net gain on disposal of assets	(5)	(10)
(Gain) loss from divestitures, asset impairments and other, net	78	(42)
Equity in net losses of unconsolidated entities, net of dividends	25	20
Loss on early extinguishment of debt	84
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Receivables	19	202
Other current assets	(5)	(9)
Other assets	4	(2)
Accounts payable and accrued liabilities	127	31
Deferred revenues and other liabilities	(28)	(120)
Net cash provided by operating activities	1,900	1,784
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(440)	(263)
Capital expenditures	(1,049)	(836)
Proceeds from divestitures of businesses and other assets (net of cash divested)	20	96
Other, net	(96)	(7)
Net cash used in investing activities	(1,565)	(1,010)
Cash flows from financing activities:
New borrowings	3,971	83
Debt repayments	(385)	(196)
Premiums paid on early extinguishment of debt	(84)
Net commercial paper borrowings (repayments)	(1,001)	443
Common stock repurchase program	(248)	(550)
Cash dividends	(440)	(406)
Exercise of common stock options	45	33
Tax payments associated with equity-based compensation transactions	(30)	(28)
Other, net	(6)	(26)
Net cash provided by (used in) financing activities	1,822	(647)
Effect of exchange rate changes on cash, cash equivalents and restricted cash and cash equivalents	2	(1)
Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	2,159	126
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	$ 2,342	$ 419