Selected Balance Sheet Data (Tables)

9 Months Ended

Sep. 30, 2022

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net

(Millions of Dollars)	Sept. 30, 2022		Dec. 31, 2021
Accounts receivable, net
Accounts receivable	$	478	$	414
Less allowance for bad debts	(48)		(40)
Accounts receivable, net	$	430	$	374

Inventories

(Millions of Dollars)	Sept. 30, 2022		Dec. 31, 2021
Inventories
Materials and supplies	$	77	$	70
Fuel	85		71
Natural gas	197		104
Total inventories	$	359	$	245

Property, Plant and Equipment, Net

(Millions of Dollars)	Sept. 30, 2022		Dec. 31, 2021
Property, plant and equipment, net
Electric plant	$	15,468	$	16,543
Natural gas plant	5,760		5,471
Common and other property	1,341		1,224
Plant to be retired (a)	1,326		182
Construction work in progress	956		681
Total property, plant and equipment	24,851		24,101
Less accumulated depreciation	(5,542)		(5,657)
Property, plant and equipment, net	$	19,309	$	18,444

(a)Amounts as of Dec. 31, 2021 include Comanche Unit 1 and 2 and Craig Units 1 and 2. Following the June 2022 approval of PSCo’s revised resource plan settlement, amounts as of Sept. 30, 2022 include the addition of Comanche Unit 3, Hayden Units 1 and 2 and coal generation assets at Pawnee pending facility gas conversion. Amounts are reported net of accumulated depreciation.