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Segment and Related Information - Revenues mix (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment revenue |  |  |
Operating revenues | $ 20,426 | $ 19,698 | $ 17,931
Collection and Disposal [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 18,865 | 17,843 | 16,099
Collection and Disposal [Member] | Collection [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 14,356 | 13,615 | 12,244
Collection and Disposal [Member] | Commercial [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 5,109 | 4,860 | 4,283
Collection and Disposal [Member] | Industrial [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 3,083 | 3,025 | 2,686
Collection and Disposal [Member] | Residential [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 3,378 | 3,264 | 3,145
Collection and Disposal [Member] | Other Collection [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 2,786 | 2,466 | 2,130
Collection and Disposal [Member] | Landfill [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 3,252 | 3,062 | 2,750
Collection and Disposal [Member] | Transfer [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 1,257 | 1,166 | 1,105
Recycling Processing and Sales [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 1,264 | 1,516 | 1,528
WM Renewable Energy [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 273 | 312 | 276
Corporate and Other [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 24 | 27 | 28
Operating Segments [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 25,176 | 24,018 | 21,693
Operating Segments [Member] | Collection and Disposal [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 23,273 | 21,893 | 19,666
Operating Segments [Member] | Collection and Disposal [Member] | Collection [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 16,117 | 15,153 | 13,459
Operating Segments [Member] | Collection and Disposal [Member] | Commercial [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 5,801 | 5,450 | 4,759
Operating Segments [Member] | Collection and Disposal [Member] | Industrial [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 3,836 | 3,681 | 3,210
Operating Segments [Member] | Collection and Disposal [Member] | Residential [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 3,474 | 3,339 | 3,181
Operating Segments [Member] | Collection and Disposal [Member] | Other Collection [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 3,006 | 2,683 | 2,309
Operating Segments [Member] | Collection and Disposal [Member] | Landfill [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 4,863 | 4,597 | 4,184
Operating Segments [Member] | Collection and Disposal [Member] | Transfer [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 2,293 | 2,143 | 2,023
Operating Segments [Member] | Recycling Processing and Sales [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 1,576 | 1,760 | 1,760
Operating Segments [Member] | WM Renewable Energy [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 276 | 315 | 220
Operating Segments [Member] | Corporate and Other [Member] |  |  |
Segment revenue |  |  |
Operating revenues | 51 | 50 | 47
Intercompany [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (4,750) | (4,320) | (3,762)
Intercompany [Member] | Collection and Disposal [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (4,408) | (4,050) | (3,567)
Intercompany [Member] | Collection and Disposal [Member] | Collection [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (1,761) | (1,538) | (1,215)
Intercompany [Member] | Collection and Disposal [Member] | Commercial [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (692) | (590) | (476)
Intercompany [Member] | Collection and Disposal [Member] | Industrial [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (753) | (656) | (524)
Intercompany [Member] | Collection and Disposal [Member] | Residential [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (96) | (75) | (36)
Intercompany [Member] | Collection and Disposal [Member] | Other Collection [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (220) | (217) | (179)
Intercompany [Member] | Collection and Disposal [Member] | Landfill [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (1,611) | (1,535) | (1,434)
Intercompany [Member] | Collection and Disposal [Member] | Transfer [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (1,036) | (977) | (918)
Intercompany [Member] | Recycling Processing and Sales [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (312) | (244) | (232)
Intercompany [Member] | WM Renewable Energy [Member] |  |  |
Segment revenue |  |  |
Operating revenues | (3) | (3) | 56
Intercompany [Member] | Corporate and Other [Member] |  |  |
Segment revenue |  |  |
Operating revenues | $ (27) | $ (23) | $ (19)

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