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Segment and Related Information - Summary (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | $ 3,822 | $ 3,716 | $ 11,072 | $ 10,833
Income from operations | 699 | 701 | 2,022 | 1,932
Operating Group Total [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 3,822 | 3,716 | 11,072 | 10,833
Income from operations | 834 | 837 | 2,433 | 2,370
Solid Waste [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 3,238 | 3,118 | 9,378 | 9,079
Income from operations | 849 | 853 | 2,458 | 2,436
Tier 1 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 1,229 | 1,174 | 3,577 | 3,435
Income from operations | 416 | 398 | 1,176 | 1,159
Tier 2 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 544 | 546 | 1,586 | 1,574
Income from operations | 142 | 142 | 405 | 400
Tier 3 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 1,465 | 1,398 | 4,215 | 4,070
Income from operations | 291 | 313 | 877 | 877
Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 584 | 598 | 1,694 | 1,754
Income from operations | (15) | (16) | (25) | (66)
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 4,624 | 4,465 | 13,387 | 12,993
Operating Segments [Member] | Operating Group Total [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 4,624 | 4,465 | 13,387 | 12,993
Operating Segments [Member] | Solid Waste [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 3,995 | 3,803 | 11,538 | 11,071
Operating Segments [Member] | Tier 1 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 1,506 | 1,432 | 4,364 | 4,189
Operating Segments [Member] | Tier 2 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 671 | 660 | 1,947 | 1,903
Operating Segments [Member] | Tier 3 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 1,818 | 1,711 | 5,227 | 4,979
Operating Segments [Member] | Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 629 | 662 | 1,849 | 1,922
Intercompany Operating Revenues [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (802) | (749) | (2,315) | (2,160)
Intercompany Operating Revenues [Member] | Operating Group Total [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (802) | (749) | (2,315) | (2,160)
Intercompany Operating Revenues [Member] | Solid Waste [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (757) | (685) | (2,160) | (1,992)
Intercompany Operating Revenues [Member] | Tier 1 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (277) | (258) | (787) | (754)
Intercompany Operating Revenues [Member] | Tier 2 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (127) | (114) | (361) | (329)
Intercompany Operating Revenues [Member] | Tier 3 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (353) | (313) | (1,012) | (909)
Intercompany Operating Revenues [Member] | Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | (45) | (64) | (155) | (168)
Corporate and Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | $ (135) | $ (136) | $ (411) | $ (438)

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