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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Consolidated net income $ 421 $ 361
Adjustments to reconcile consolidated net income to net cash provided by operating activities:    
Depreciation and amortization 472 402
Deferred income tax benefit (14) (4)
Interest accretion on landfill liabilities 26 24
Provision for bad debts 11 14
Equity-based compensation expense 23 13
Net gain on disposal of assets (9) (3)
Loss from divestitures, asset impairments and other, net 17 7
Equity in net losses of unconsolidated entities, net of dividends 9 19
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:    
Receivables 199 127
Other current assets (1) (10)
Other assets 7 1
Accounts payable and accrued liabilities (2) (123)
Deferred revenues and other liabilities (39) (63)
Net cash provided by operating activities 1,120 765
Cash flows from investing activities:    
Acquisitions of businesses, net of cash acquired (7) (1)
Capital expenditures (270) (459)
Proceeds from divestitures of businesses and other assets (net of cash divested) 15 12
Other, net (72) (55)
Net cash used in investing activities (334) (503)
Cash flows from financing activities:    
Debt repayments (49) (25)
Commercial paper repayments (280)  
Common stock repurchase program (250) (402)
Cash dividends (247) (236)
Exercise of common stock options 17 31
Tax payments associated with equity-based compensation transactions (28) (33)
Other, net 7 (3)
Net cash used in financing activities (830) (668)
Effect of exchange rate changes on cash, cash equivalents and restricted cash and cash equivalents 2 (4)
Decrease in cash, cash equivalents and restricted cash and cash equivalents (42) (410)
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period 648 3,647
Cash, cash equivalents and restricted cash and cash equivalents at end of period $ 606 $ 3,237