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Segment and Related Information - Summary (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Segment Reporting |  |  |
Number of reportable segments | segment | 5 |  |
Net operating revenue royalty (as a percent) | 15.00% |  |
Royalty amount | $ 48 | $ 41 | $ 47
Operating revenues | 22,063 | 20,426 | 19,698
Operating expenses | 13,383 | 12,606 | 12,294
Selling, general and administrative | 2,264 | 1,926 | 1,938
Other net expenses | 86 | 248 | 63
Depreciation, depletion and amortization | 2,267 | 2,071 | 2,038
Income from operations | 4,063 | 3,575 | 3,365
Capital expenditures | 3,328 | 2,838 | 2,809
Goodwill impairment | 0 | 168 |
Contingent consideration liability increase (decrease) |  | (46) |
Collection and Disposal [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 19,716 | 18,865 | 17,843
Other net expenses | (12) |  | 44
Depreciation, depletion and amortization | 1,900 | 1,812 | 1,816
Income from operations | 5,444 | 4,821 | 4,360
Capital expenditures | 2,242 | 1,853 | 1,762
Collection and Disposal [Member] | East Tier [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 8,703 | 8,412 | 8,011
Other net expenses | 4 | (4) | 46
Depreciation, depletion and amortization | 1,018 | 986 | 977
Income from operations | 2,760 | 2,446 | 2,178
Capital expenditures | 1,119 | 926 | 948
Collection and Disposal [Member] | West Tier [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 8,285 | 7,935 | 7,614
Other net expenses | (15) | (2) | (8)
Depreciation, depletion and amortization | 856 | 800 | 814
Income from operations | 2,693 | 2,383 | 2,182
Capital expenditures | 1,071 | 899 | 774
Collection and Disposal [Member] | Other Ancillary [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 2,728 | 2,518 | 2,218
Other net expenses | (1) | 6 | 6
Depreciation, depletion and amortization | 26 | 26 | 25
Income from operations | (9) | (8) |
Capital expenditures | 52 | 28 | 40
Recycling Processing and Sales [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 1,603 | 1,264 | 1,516
Other net expenses | 3 | 122 |
Depreciation, depletion and amortization | 132 | 110 | 92
Income from operations | 86 | (44) | 128
Capital expenditures | 524 | 450 | 453
Goodwill impairment |  | 168 |
WM Renewable Energy [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 318 | 273 | 312
Other net expenses | 7 |  |
Depreciation, depletion and amortization | 36 | 33 | 33
Income from operations | 99 | 79 | 132
Capital expenditures | 514 | 420 | 290
WM Healthcare Solutions [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 403 |  |
Depreciation, depletion and amortization | 73 |  |
Income from operations | (69) |  |
Capital expenditures | 43 |  |
Corporate and Other [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 23 | 24 | 27
Other net expenses | 88 | 126 | 19
Depreciation, depletion and amortization | 126 | 116 | 97
Income from operations | (1,497) | (1,281) | (1,255)
Capital expenditures | 5 | 115 | 304
Operating Segments [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 26,879 | 25,039 | 23,936
Operating expenses | 18,178 | 17,204 | 16,514
Selling, general and administrative | 2,285 | 1,941 | 1,956
Operating Segments [Member] | Collection and Disposal [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 24,207 | 23,141 | 21,812
Operating expenses | 16,013 | 15,674 | 14,799
Selling, general and administrative | 862 | 834 | 793
Operating Segments [Member] | Collection and Disposal [Member] | Processing fees [Member] |  |  |
Segment Reporting |  |  |
Income from operations | 100 | 61 | 77
Operating Segments [Member] | Collection and Disposal [Member] | East Tier [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 10,955 | 10,533 | 9,920
Operating expenses | 6,801 | 6,747 | 6,378
Selling, general and administrative | 372 | 358 | 341
Operating Segments [Member] | Collection and Disposal [Member] | West Tier [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 10,337 | 9,897 | 9,479
Operating expenses | 6,430 | 6,352 | 6,143
Selling, general and administrative | 373 | 364 | 348
Operating Segments [Member] | Collection and Disposal [Member] | Other Ancillary [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 2,915 | 2,711 | 2,413
Operating expenses | 2,782 | 2,575 | 2,278
Selling, general and administrative | 117 | 112 | 104
Operating Segments [Member] | Recycling Processing and Sales [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 1,890 | 1,576 | 1,760
Operating expenses | 1,610 | 1,332 | 1,481
Selling, general and administrative | 59 | 56 | 59
Operating Segments [Member] | WM Renewable Energy [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 321 | 276 | 315
Operating expenses | 166 | 151 | 144
Selling, general and administrative | 13 | 13 | 6
Operating Segments [Member] | WM Healthcare Solutions [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 413 |  |
Operating expenses | 252 |  |
Selling, general and administrative | 157 |  |
Operating Segments [Member] | Corporate and Other [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 48 | 46 | 49
Operating expenses | 137 | 47 | 90
Selling, general and administrative | 1,194 | 1,038 | 1,098
Intercompany Operating Revenues [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 4,816 | 4,613 | 4,238
Operating expenses | 4,795 | 4,598 | 4,220
Selling, general and administrative | (21) | (15) | (18)
Intercompany Operating Revenues [Member] | Collection and Disposal [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 4,491 | 4,276 | 3,969
Intercompany Operating Revenues [Member] | Collection and Disposal [Member] | East Tier [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 2,252 | 2,121 | 1,909
Intercompany Operating Revenues [Member] | Collection and Disposal [Member] | West Tier [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 2,052 | 1,962 | 1,865
Intercompany Operating Revenues [Member] | Collection and Disposal [Member] | Other Ancillary [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 187 | 193 | 195
Intercompany Operating Revenues [Member] | Recycling Processing and Sales [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 287 | 312 | 244
Intercompany Operating Revenues [Member] | WM Renewable Energy [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 3 | 3 | 3
Intercompany Operating Revenues [Member] | WM Healthcare Solutions [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 10 |  |
Intercompany Operating Revenues [Member] | Corporate and Other [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | $ 25 | $ 22 | $ 22

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