Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Operating revenues	$ 3,315	$ 3,561	$ 6,355	$ 6,957
Costs and expenses:
Operating	2,163	2,301	4,109	4,533
Selling, general and administrative	322	353	670	728
Depreciation and amortization	322	339	614	656
Restructuring	4	1	5	2
(Income) expense from divestitures, asset impairments and unusual items	2	35	15	37
Total costs and expenses	2,813	3,029	5,413	5,956
Income from operations	502	532	942	1,001
Other income (expense):
Interest expense, net	(95)	(115)	(199)	(236)
Loss on early extinguishment of debt	(2)		(552)
Equity in net losses of unconsolidated entities	(15)	(13)	(23)	(22)
Other, net	(1)	(2)	(1)	(5)
Total other income (expense)	(113)	(130)	(775)	(263)
Income before income taxes	389	402	167	738
Provision for income taxes	116	180	25	279
Consolidated net income	273	222	142	459
Less: Net income (loss) attributable to noncontrolling interests	(1)	12	(3)	21
Net income attributable to Waste Management, Inc.	$ 274	$ 210	$ 145	$ 438
Basic earnings per common share	$ 0.60	$ 0.45	$ 0.32	$ 0.94
Diluted earnings per common share	0.60	0.45	0.32	0.94
Cash dividends declared per common share	$ 0.385	$ 0.375	$ 0.770	$ 0.750