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Property and Equipment | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment |
Property and Equipment | 4. Property and Equipment Property and equipment as of December 31 consisted of the following (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 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.
See Note 11 for information regarding asset impairments. 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
​ See Note 5 for information regarding amortization of our intangible assets.

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