Selected Balance Sheet Data (Tables)

3 Months Ended

Mar. 31, 2022

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net

(Millions of Dollars)	March 31, 2022		Dec. 31, 2021
Accounts receivable, net
Accounts receivable	$	149	$	127
Less allowance for bad debts	(12)		(12)
Accounts receivable, net	$	137	$	115

Inventories

(Millions of Dollars)	March 31, 2022		Dec. 31, 2021
Inventories
Materials and supplies	$	34	$	29
Fuel	19		22
Total inventories	$	53	$	51

Property, Plant and Equipment, Net

(Millions of Dollars)	March 31, 2022		Dec. 31, 2021
Property, plant and equipment, net
Electric plant	$	9,734	$	9,639
Plant to be retired (a)	285		299
CWIP	195		171
Total property, plant and equipment	10,214		10,109
Less accumulated depreciation	(2,323)		(2,271)
Property, plant and equipment, net	$	7,891	$	7,838