We compute depreciation expense on a straight-line basis over the estimated useful lives of the assets as follows:
ClassificationEstimated Useful Life
Buildings and leasehold improvements
Term of lease to 40 years
Vehicles, tractors and trailers
3 to 14 years
Machinery and equipment
3 to 10 years
Computer software and equipment
1 to 5 years
December 31,
(In millions)20252024
Property and equipment
Land$920 $879 
Buildings and leasehold improvements1,017 874 
Vehicles, tractors and trailers3,033 2,746 
Machinery and equipment330 291 
Computer software and equipment724 633 
6,024 5,422 
Less: accumulated depreciation and amortization(2,360)(2,019)
Total property and equipment, net$3,664 $3,402 
Net book value of capitalized internally-developed software included in property and equipment, net$100 $112 

Historical Timeline

Fiscal YearFiled
2025Feb 5, 2026Showing above
2024Feb 7, 2025
2023Feb 8, 2024
2022Feb 13, 2023
2021Feb 16, 2022
2020Feb 12, 2021
2019Feb 10, 2020
2018Feb 14, 2019
2017Feb 12, 2018
2016Feb 28, 2017
2015Feb 29, 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.