Selected Balance Sheet Data (Tables)

6 Months Ended

Jun. 30, 2024

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net

(Millions of dollars)	June 30, 2024		Dec. 31, 2023
Accounts receivable, net
Accounts receivable	$	86	$	98
Less allowance for bad debts	(7)		(9)
Accounts receivable, net	$	79	$	89

Inventories

(Millions of dollars)	June 30, 2024		Dec. 31, 2023
Inventories
Materials and supplies	$	12	$	11
Fuel	10		10
Natural gas	3		8
Total inventories	$	25	$	29

Property, Plant and Equipment, Net

(Millions of dollars)	June 30, 2024		Dec. 31, 2023
Property, plant and equipment, net
Electric plant	$	3,971	$	3,845
Natural gas plant	517		502
Common and other property	292		278
Construction work in progress	346		252
Total property, plant and equipment	5,126		4,877
Less accumulated depreciation	(1,687)		(1,640)
Property, plant and equipment, net	$	3,439	$	3,237