We provide for depreciation and amortization using the straight-line method by charges to operations in amounts that allocate the cost of the assets over their estimated useful lives as follows:
Asset ClassificationEstimated
Useful Life
Buildings and improvements
10-30 years
Machinery and equipment
5-10 years
Rolling stock
5-10 years
Containers
5-12 years
Furniture and fixtures
3-8 years
A summary of property and equipment is as follows:
 December 31,
 20252024
Land$67,191 $56,010 
Landfills894,080 859,602 
Finance lease right-of-use assets 166,085 128,159 
Buildings and improvements355,180 303,170 
Machinery and equipment354,628 318,391 
Rolling stock595,232 490,571 
Containers352,576 311,236 
Total property and equipment (1)
2,784,972 2,467,139 
Less: accumulated depreciation and amortization (1,495,563)(1,302,324)
Property and equipment, net
$1,289,409 $1,164,815 
(1)Includes construction-in-process of $65,941 and $104,686 at December 31, 2025 and December 31, 2024, respectively, that have not been placed in service and, therefore, have not begun depreciating.

Historical Timeline

Fiscal YearFiled
2025Feb 20, 2026Showing above
2024Feb 18, 2025
2023Feb 16, 2024
2022Feb 17, 2023
2021Feb 18, 2022
2020Feb 19, 2021
2019Feb 21, 2020
2018Feb 22, 2019
2017Mar 2, 2018
2016Mar 2, 2017
2015Mar 2, 2016

About PP&E Disclosures

The PP&E disclosure details a company's physical asset base — land, buildings, machinery, and equipment — along with the depreciation methods and useful life assumptions that determine how these costs flow through the income statement. Capitalization policy thresholds reveal management's judgment on the boundary between expense and asset, directly affecting both reported earnings and asset values.

Key signals: changes in estimated useful lives or depreciation methods can materially shift reported earnings without any operational change. Compare capital expenditures against depreciation expense — when capex consistently trails depreciation, the asset base may be aging and underinvested. Watch for large asset impairments or write-downs that signal overvalued carrying amounts. Asset retirement obligations reveal future environmental or decommissioning costs that are often underappreciated. Compare PP&E intensity (PP&E-to-revenue) against industry peers to assess capital efficiency and competitive positioning.