Segment and Related Information - Revenues mix (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue from External Customer [Line Items]
Operating revenues	$ 4,665	$ 3,861	$ 13,253	$ 11,151
Operating Segments [Member]
Revenue from External Customer [Line Items]
Operating revenues	5,643	4,692	16,049	13,544
Operating Segments [Member] | Collection [Member]
Revenue from External Customer [Line Items]
Operating revenues	2,978	2,516	8,668	7,359
Operating Segments [Member] | Commercial [Member]
Revenue from External Customer [Line Items]
Operating revenues	1,214	1,025	3,523	3,016
Operating Segments [Member] | Residential [Member]
Revenue from External Customer [Line Items]
Operating revenues	795	662	2,371	1,969
Operating Segments [Member] | Industrial [Member]
Revenue from External Customer [Line Items]
Operating revenues	829	709	2,383	2,027
Operating Segments [Member] | Other Collection [Member]
Revenue from External Customer [Line Items]
Operating revenues	140	120	391	347
Operating Segments [Member] | Landfill [Member]
Revenue from External Customer [Line Items]
Operating revenues	1,100	946	3,090	2,707
Operating Segments [Member] | Transfer [Member]
Revenue from External Customer [Line Items]
Operating revenues	550	482	1,547	1,362
Operating Segments [Member] | Recycling [Member]
Revenue from External Customer [Line Items]
Operating revenues	464	290	1,203	819
Operating Segments [Member] | Other Revenue [Member]
Revenue from External Customer [Line Items]
Operating revenues	551	458	1,541	1,297
Intercompany Operating Revenues [Member]
Revenue from External Customer [Line Items]
Operating revenues	$ (978)	$ (831)	$ (2,796)	$ (2,393)