Segment and Related Information - Summary (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Operating revenues	$ 3,729	$ 3,696
Income from operations	573	621
Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,729	3,696
Income from operations	820	850
Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,204	3,139
Income from operations	845	868
Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,223	1,188
Income from operations	393	398
Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	734	722
Income from operations	188	200
Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,247	1,229
Income from operations	264	270
Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	525	557
Income from operations	(25)	(18)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,530	4,453
Operating Segments [Member] | Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,530	4,453
Operating Segments [Member] | Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,976	3,865
Operating Segments [Member] | Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,503	1,453
Operating Segments [Member] | Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	932	904
Operating Segments [Member] | Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,541	1,508
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	554	588
Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(801)	(757)
Intercompany Operating Revenues [Member] | Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	(801)	(757)
Intercompany Operating Revenues [Member] | Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	(772)	(726)
Intercompany Operating Revenues [Member] | Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(280)	(265)
Intercompany Operating Revenues [Member] | Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(198)	(182)
Intercompany Operating Revenues [Member] | Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(294)	(279)
Intercompany Operating Revenues [Member] | Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(29)	(31)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	$ (247)	$ (229)