Segment and Related Information - Summary (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Operating revenues	$ 4,112	$ 3,729
Income from operations	650	573
Asset impairments	6
Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,112	3,729
Income from operations	936	820
Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,470	3,204
Income from operations	918	845
Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,319	1,223
Income from operations	425	393
Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	791	734
Income from operations	202	188
Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,360	1,247
Income from operations	291	264
Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	642	525
Income from operations	18	(25)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,971	4,530
Operating Segments [Member] \| Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,971	4,530
Operating Segments [Member] \| Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,306	3,976
Operating Segments [Member] \| Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,639	1,503
Operating Segments [Member] \| Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,007	932
Operating Segments [Member] \| Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,660	1,541
Operating Segments [Member] \| Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	665	554
Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(859)	(801)
Intercompany Operating Revenues [Member] \| Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	(859)	(801)
Intercompany Operating Revenues [Member] \| Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	(836)	(772)
Intercompany Operating Revenues [Member] \| Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(320)	(280)
Intercompany Operating Revenues [Member] \| Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(216)	(198)
Intercompany Operating Revenues [Member] \| Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(300)	(294)
Intercompany Operating Revenues [Member] \| Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(23)	(29)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	$ (286)	$ (247)

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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