As of December 31, 2025 and 2024, our property, plant, and equipment, net consisted of the following:
 
Straight-Line
Estimated Useful Life
Composite
Depreciation Rates
December 31,
 20252024
(Years) (%)(In millions)
Interstate Natural Gas FERC-Regulated
Pipelines (Natural gas)
1.09-6.67
$12,583 $12,376 
Equipment (Natural gas)
1.09-6.67
10,118 9,488 
Other(a)
0.00-33
1,124 1,143 
Accumulated depreciation, depletion, and amortization(11,092)(10,712)
Depreciable assets12,733 12,295 
Land54 51 
Construction work in process454 568 
Total interstate natural gas FERC-regulated13,241 12,914 
Other
Pipelines (Natural gas, liquids, refined products, crude oil and CO2)
5-40
0.09-33.33
9,697 8,933 
Equipment (Natural gas, liquids, refined products, crude oil, CO2 and terminals)
5-40
0.09-33.33
21,425 20,243 
Other(a)
3-10
0.00-33.33
5,790 5,587 
Accumulated depreciation, depletion, and amortization(12,970)(11,470)
Depreciable assets23,942 23,293 
Land785 786 
Construction work in process1,363 1,020 
Total other26,090 25,099 
Property, plant, and equipment, net$39,331 $38,013 
(a)Includes general plant, general structures and buildings, land rights-of-way, computer and communication equipment, intangibles, vessels, transmix products, linefill, and miscellaneous property, plant, and equipment.

Historical Timeline

Fiscal YearFiled
2025Feb 13, 2026Showing above
2024Feb 13, 2025
2023Feb 20, 2024
2022Feb 8, 2023
2021Feb 7, 2022
2020Feb 5, 2021
2019Feb 12, 2020
2018Feb 8, 2019
2017Feb 9, 2018
2016Feb 10, 2017
2015Feb 16, 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.