Segment and Related Information - Summary (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Operating revenues	$ 3,511	$ 3,440
Income from operations	608	558
Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,511	3,440
Income from operations	755	718
Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,958	2,885
Income from operations	778	750
Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,132	1,102
Income from operations	365	366
Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	502	491
Income from operations	122	116
Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,324	1,292
Income from operations	291	268
Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	553	555
Income from operations	(23)	(32)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,226	4,112
Operating Segments [Member] | Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,226	4,112
Operating Segments [Member] | Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,619	3,509
Operating Segments [Member] | Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,373	1,340
Operating Segments [Member] | Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	613	592
Operating Segments [Member] | Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,633	1,577
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	607	603
Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(715)	(672)
Intercompany Operating Revenues [Member] | Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	(715)	(672)
Intercompany Operating Revenues [Member] | Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	(661)	(624)
Intercompany Operating Revenues [Member] | Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(241)	(238)
Intercompany Operating Revenues [Member] | Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(111)	(101)
Intercompany Operating Revenues [Member] | Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(309)	(285)
Intercompany Operating Revenues [Member] | Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(54)	(48)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	$ (147)	$ (160)