Selected Balance Sheet Data

3 Months Ended

Mar. 31, 2021

Balance Sheet Related Disclosures [Abstract]

Selected Balance Sheet Data

(Millions of Dollars)	March 31, 2021		Dec. 31, 2020
Accounts receivable, net
Accounts receivable	$	110	$	102
Less allowance for bad debts	(9)		(8)
Accounts receivable, net	$	101	$	94

(Millions of Dollars)	March 31, 2021		Dec. 31, 2020
Inventories
Materials and supplies	$	27	$	27
Fuel	18		9
Total inventories	$	45	$	36

(Millions of Dollars)	March 31, 2021		Dec. 31, 2020
Property, plant and equipment, net
Electric plant	$	9,293	$	9,229
Plant to be retired (a)	313		316
CWIP	235		146
Total property, plant and equipment	9,841		9,691
Less accumulated depreciation	(2,144)		(2,088)
Property, plant and equipment, net	$	7,697	$	7,603