v3.26.3
Selected Balance Sheet Data (Tables)
9 Months Ended
Sep. 30, 2026
Balance Sheet Related Disclosures [Abstract]  
Accounts Receivable, Net
(Millions of dollars)Sept. 30, 2026Dec. 31, 2025
Accounts receivable, net
Accounts receivable$88 $82 
Less allowance for bad debts(5)(4)
Accounts receivable, net$83 $78 
Inventories
(Millions of dollars)Sept. 30, 2026Dec. 31, 2025
Inventories
Materials and supplies$21 $16 
Fuel10 10 
Natural gas8 7 
Total inventories$39 $33 
Property, Plant and Equipment, Net
(Millions of dollars)Sept. 30, 2026Dec. 31, 2025
Property, plant and equipment, net
Electric plant$4,910 $4,383 
Natural gas plant638 608 
Common and other property331 329 
Construction work in progress725 673 
Total property, plant and equipment6,604 5,993 
Less accumulated depreciation(1,869)(1,780)
Property, plant and equipment, net$4,735 $4,213