Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 337	$ 281	$ 479	$ 740
Derivative instruments, net	5		10	(2)
Available-for-sale securities, net	(2)	3	(1)	5
Foreign currency translation adjustments	(60)	(61)	(123)	(80)
Other comprehensive income (loss), net of taxes	(57)	(58)	(114)	(77)
Comprehensive income	280	223	365	663
Less: Comprehensive income (loss) attributable to noncontrolling interests	2	11	(1)	32
Comprehensive income attributable to Waste Management, Inc.	$ 278	$ 212	$ 366	$ 631