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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Cash flows from operating activities:    
Consolidated net income (loss) $ 256 $ (131)
Adjustments to reconcile consolidated net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 312 292
Deferred income tax provision 32 38
Interest accretion on landfill liabilities 22 21
Interest accretion on and discount rate adjustments to environmental remediation liabilities and recovery assets 1 1
Provision for bad debts 11 12
Equity-based compensation expense 30 20
Excess tax benefits associated with equity-based transactions (7) (7)
Net gain from disposal of assets (5) (7)
Effect of (income) expense from divestitures, asset impairments and unusual items and other, net (1) 13
Equity in net losses of unconsolidated entities, net of dividends 7 8
Loss on early extinguishment of debt 1 550
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:    
Receivables 111 (59)
Other current assets (11) (4)
Other assets 75 (19)
Accounts payable and accrued liabilities (109) (195)
Deferred revenues and other liabilities (19) (34)
Net cash provided by operating activities 706 499
Cash flows from investing activities:    
Acquisitions of businesses, net of cash acquired (537) (445)
Capital expenditures (317) (233)
Proceeds from divestitures of businesses and other assets (net of cash divested) 13 19
Net receipts from restricted trust and escrow accounts   34
Other, net (6) (3)
Net cash used in investing activities (847) (628)
Cash flows from financing activities:    
New borrowings 1,301 1,817
Debt repayments (647) (2,029)
Premiums paid on early extinguishment of debt (1) (554)
Common stock repurchases (250)  
Cash dividends (183) (176)
Exercise of common stock options 18 39
Excess tax benefits associated with equity-based transactions 7 7
Other, net (39) (2)
Net cash provided by (used in) financing activities 206 (898)
Effect of exchange rate changes on cash and cash equivalents   (3)
Increase (decrease) in cash and cash equivalents 65 (1,030)
Cash and cash equivalents at beginning of period 39 1,307
Cash and cash equivalents at end of period $ 104 $ 277