Depreciation and amortization are computed using the straight-line method over the lesser of the remaining lease term or the following estimated useful lives:

Buildings and improvements
15-30 years
Transportation fleet equipment
5 years
Software
3 years
Furniture, fixtures and equipment
3-5 years
The following table summarizes property and equipment, net, as of December 31, 2025 and 2024:

December 31,
20252024
(in millions)
Land and site improvements$1,365 $1,335 
Buildings and improvements1,467 1,380 
Transportation fleet636 545 
Software356 301 
Furniture, fixtures, and equipment178 147 
Total property and equipment excluding construction in progress4,002 3,708 
Less: accumulated depreciation and amortization on property and equipment(1,250)(994)
Property and equipment excluding construction in progress, net2,752 2,714 
Construction in progress62 59 
Property and equipment, net$2,814 $2,773 

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.