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Segment and Related Information - Summary (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Operating revenues	$ 3,946	$ 3,739	$ 7,642	$ 7,250
Income from operations	696	715	1,317	1,323
Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,946	3,739	7,642	7,250
Income from operations	861	844	1,676	1,599
Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	3,396	3,182	6,535	6,140
Income from operations	921	831	1,764	1,609
Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,310	1,216	2,525	2,348
Income from operations	432	395	826	760
Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	569	540	1,091	1,042
Income from operations	148	141	284	263
Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,517	1,426	2,919	2,750
Income from operations	341	295	654	586
Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	550	557	1,107	1,110
Income from operations	(60)	13	(88)	(10)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,779	4,537	9,232	8,763
Operating Segments [Member] | Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,779	4,537	9,232	8,763
Operating Segments [Member] | Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	4,199	3,924	8,064	7,543
Operating Segments [Member] | Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,608	1,485	3,094	2,858
Operating Segments [Member] | Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	703	663	1,346	1,276
Operating Segments [Member] | Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	1,888	1,776	3,624	3,409
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	580	613	1,168	1,220
Intercompany Operating Revenues [Member]
Segment Reporting Information [Line Items]
Operating revenues	(833)	(798)	(1,590)	(1,513)
Intercompany Operating Revenues [Member] | Operating Group Total [Member]
Segment Reporting Information [Line Items]
Operating revenues	(833)	(798)	(1,590)	(1,513)
Intercompany Operating Revenues [Member] | Solid Waste [Member]
Segment Reporting Information [Line Items]
Operating revenues	(803)	(742)	(1,529)	(1,403)
Intercompany Operating Revenues [Member] | Tier 1 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(298)	(269)	(569)	(510)
Intercompany Operating Revenues [Member] | Tier 2 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(134)	(123)	(255)	(234)
Intercompany Operating Revenues [Member] | Tier 3 [Member]
Segment Reporting Information [Line Items]
Operating revenues	(371)	(350)	(705)	(659)
Intercompany Operating Revenues [Member] | Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	(30)	(56)	(61)	(110)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income from operations	$ (165)	$ (129)	$ (359)	$ (276)

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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-Publisher FASB
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