XML 88 R39.htm IDEA: XBRL DOCUMENT v3.24.0.1
Property, Plant, and Equipment (Tables)
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Public Utility Property, Plant, and Equipment
The following table sets forth our property, plant and equipment by property type, for the periods indicated:
December 31,December 31,
20232022
(Thousands of dollars)
Natural gas distribution pipelines and related equipment$6,716,074 $6,240,236 
Natural gas transmission pipelines and related equipment713,505 661,379 
General plant and other907,946 782,870 
Construction work in process131,442 150,072 
Property, plant and equipment8,468,967 7,834,557 
Accumulated depreciation and amortization(2,333,755)(2,205,717)
Net property, plant and equipment$6,135,212 $5,628,840