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Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Goodwill |  |
Contingent consideration liability increase (decrease) |  | $ (46)
Goodwill increase (decrease) | $ 4,184 |
Noncontrolling interest goodwill |  | 22
Goodwill roll forward |  |
Goodwill, Beginning Balance | 9,254 | 9,323
Acquired goodwill | 4,221 | 90
Divested goodwill | (4) |
Impairments | 0 | (168)
Foreign currency translation and other | (33) | 9
Goodwill, Ending Balance | 13,438 | 9,254
Collection and Disposal Segment [Member] | East Tier {Member] |  |
Goodwill roll forward |  |
Goodwill, Beginning Balance | 5,094 | 5,072
Acquired goodwill | 553 | 13
Foreign currency translation and other | (32) | 9
Goodwill, Ending Balance | 5,615 | 5,094
Collection and Disposal Segment [Member] | West Tier [Member] |  |
Goodwill roll forward |  |
Goodwill, Beginning Balance | 3,766 | 3,696
Acquired goodwill | 30 | 70
Divested goodwill | (4) |
Goodwill, Ending Balance | 3,792 | 3,766
Collection and Disposal Segment [Member] | Other Ancillary [Member] |  |
Goodwill roll forward |  |
Goodwill, Beginning Balance | 27 | 27
Goodwill, Ending Balance | 27 | 27
Recycling Processing and Sales [Member] |  |
Goodwill roll forward |  |
Goodwill, Beginning Balance | 366 | 527
Acquired goodwill | 5 | 7
Impairments |  | (168)
Foreign currency translation and other | (1) |
Goodwill, Ending Balance | 370 | 366
WM Healthcare Solutions [Member] |  |
Goodwill roll forward |  |
Acquired goodwill | 3,633 |
Goodwill, Ending Balance | 3,633 |
Corporate and Other [Member] |  |
Goodwill roll forward |  |
Goodwill, Beginning Balance | 1 | 1
Goodwill, Ending Balance | $ 1 | $ 1

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