Segment and Related Information - Summary (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of segments | segment			2
Operating revenues	$ 5,027	$ 4,476	$ 9,688	$ 8,588
Income from operations	890	791	1,658	1,441
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	6,122	5,435	11,768	10,406
Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(1,095)	(959)	(2,080)	(1,818)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	(317)	(280)	(630)	(578)
Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	5,027	4,476	9,688	8,588
Income from operations	1,207	1,071	2,288	2,019
Operating Group Total [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	6,122	5,435	11,768	10,406
Operating Group Total [Member] | Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(1,095)	(959)	(2,080)	(1,818)
Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,185	3,779	8,039	7,249
Income from operations	1,189	1,065	2,269	1,993
Solid Waste [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	5,221	4,706	10,010	9,012
Solid Waste [Member] | Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(1,036)	(927)	(1,971)	(1,763)
East Tier [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,113	1,900	4,051	3,634
Income from operations	581	512	1,112	965
East Tier [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,609	2,339	4,992	4,467
East Tier [Member] | Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(496)	(439)	(941)	(833)
West Tier [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,072	1,879	3,988	3,615
Income from operations	608	553	1,157	1,028
West Tier [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	2,612	2,367	5,018	4,545
West Tier [Member] | Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(540)	(488)	(1,030)	(930)
Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	842	697	1,649	1,339
Income from operations	18	6	19	26
Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	901	729	1,758	1,394
Other [Member] | Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	$ (59)	$ (32)	$ (109)	$ (55)