CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Consolidated net income	$ 514	$ 421
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	482	472
Deferred income tax expense (benefit)	(11)	(14)
Interest accretion on landfill and environmental remediation liabilities	28	26
Provision for bad debts	10	11
Equity-based compensation expense	25	23
Net gain on disposal of assets	(4)	(9)
(Gain) loss from divestitures, asset impairments and other, net	17	17
Equity in net losses of unconsolidated entities, net of dividends	15	9
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Receivables	93	199
Other current assets	(20)	(1)
Other assets	19	7
Accounts payable and accrued liabilities	101	(2)
Deferred revenues and other liabilities	(11)	(39)
Net cash provided by operating activities	1,258	1,120
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(9)	(7)
Capital expenditures	(418)	(270)
Proceeds from divestitures of businesses and other assets, net of cash divested	5	15
Other, net	(150)	(72)
Net cash used in investing activities	(572)	(334)
Cash flows from financing activities:
New borrowings	2,362
Debt repayments	(2,471)	(329)
Common stock repurchase program	(250)	(250)
Cash dividends	(275)	(247)
Exercise of common stock options	9	17
Tax payments associated with equity-based compensation transactions	(34)	(28)
Other, net	24	7
Net cash used in financing activities	(635)	(830)
Effect of exchange rate changes on cash, cash equivalents and restricted cash and cash equivalents	1	2
Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	52	(42)
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period	194	648
Cash, cash equivalents and restricted cash and cash equivalents at end of period	$ 246	$ 606