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Property and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment |
Property and Equipment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2024 |  | 2023
Land | ​ | $ | 873 | ​ | $ | 772
Landfills | ​ |  | 20,273 | ​ |  | 19,473
Vehicles | ​ |  | 7,065 | ​ |  | 6,581
Machinery and equipment (a) | ​ |  | 5,757 | ​ |  | 4,989
Containers | ​ |  | 3,369 | ​ |  | 3,104
Buildings and improvements | ​ |  | 5,210 | ​ |  | 4,266
Furniture, fixtures and office equipment | ​ | ​ | 570 | ​ | ​ | 609
​ | ​ |  | 43,117 | ​ |  | 39,794
Less: Accumulated depreciation of tangible property and equipment | ​ |  | (11,518) | ​ |  | (11,183)
Less: Accumulated depletion of landfill airspace | ​ |  | (12,259) | ​ | ​ | (11,643)
Property and equipment, net (b) | ​ | $ | 19,340 | ​ | $ | 16,968
(a) | As of December 31, 2024 and 2023, includes (i) $1.7 billion and $1.5 billion, respectively, related to recycling facilities and (ii) $834 million and $720 million, respectively, related to RNG facilities. December 31, 2024 also includes $419 million related to autoclaves, incinerators, and other equipment of Stericycle that was acquired on November 4, 2024 and is now included in WM Healthcare Solutions.
(b) | Includes approximately $3.4 billion and $2.8 billion of construction in progress as of December 31, 2024 and 2023, respectively.
Depreciation and amortization expense | Depreciation and depletion expense, including for assets recorded as financing leases, consisted of the following for the year ended December 31 (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2024 |  | 2023 |  | 2022
Depreciation of tangible property and equipment | ​ | $ | 1,292 | ​ | $ | 1,197 | ​ | $ | 1,155
Depletion of landfill airspace | ​ |  | 795 | ​ | ​ | 745 | ​ | ​ | 754
Depreciation and depletion expense | ​ | $ | 2,087 | ​ | $ | 1,942 | ​ | $ | 1,909

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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