Selected Balance Sheet Data

6 Months Ended

Jun. 30, 2020

Balance Sheet Related Disclosures [Abstract]

Selected Balance Sheet Data

(Millions of Dollars)	June 30, 2020		Dec. 31, 2019
Accounts receivable, net
Accounts receivable	$	859	$	892
Less allowance for bad debts	(60)		(55)
Accounts receivable, net	$	799	$	837

(Millions of Dollars)	June 30, 2020		Dec. 31, 2019
Inventories
Materials and supplies	$	277	$	270
Fuel	173		191
Natural gas	37		83
Total inventories	$	487	$	544

(Millions of Dollars)	June 30, 2020		Dec. 31, 2019
Property, plant and equipment, net
Electric plant	$	45,413	$	44,355
Natural gas plant	6,747		6,560
Common and other property	2,385		2,341
Plant to be retired (a)	292		259
CWIP	3,060		2,329
Total property, plant and equipment	57,897		55,844
Less accumulated depreciation	(17,097)		(16,735)
Nuclear fuel	2,925		2,909
Less accumulated amortization	(2,601)		(2,535)
Property, plant and equipment, net	$	41,124	$	39,483

^(a)In 2018, the CPUC approved early retirement of PSCo’s Comanche Units 1 and 2 in approximately 2022 and 2025, respectively. PSCo also expects Craig Unit 1 to be retired early in 2025. Amounts are presented net of accumulated depreciation.