The following table details the weighted-average useful lives of structures and machinery and equipment by reporting segment (numbers in years):
StructuresMachinery and equipment
   Engine Products2916
   Fastening Systems2717
   Engineered Structures2920
   Forged Wheels2718
December 31, 2025December 31, 2024
Land and land rights$85 $84 
Structures1,134 1,025 
Machinery and equipment4,275 4,118 
5,494 5,227 
Less: accumulated depreciation and amortization3,236 3,150 
2,258 2,077 
Construction work-in-progress335 309 
Properties, plants, and equipment, net$2,593 $2,386 

Historical Timeline

Fiscal YearFiled
2025Feb 12, 2026Showing above
2018Feb 21, 2019

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.