Selected Balance Sheet Data

3 Months Ended

Mar. 31, 2024

Balance Sheet Related Disclosures [Abstract]

Selected Balance Sheet Data

(Millions of Dollars)	March 31, 2024		Dec. 31, 2023
Accounts receivable, net
Accounts receivable	$	1,339	$	1,443
Less allowance for bad debts	(119)		(128)
Accounts receivable, net	$	1,220	$	1,315

(Millions of Dollars)	March 31, 2024		Dec. 31, 2023
Inventories
Materials and supplies	$	384	$	377
Fuel	192		211
Natural gas	47		123
Total inventories	$	623	$	711

(Millions of Dollars)	March 31, 2024		Dec. 31, 2023
Property, plant and equipment, net
Electric plant	$	52,982	$	52,494
Natural gas plant	9,198		9,080
Common and other property	3,216		3,190
Plant to be retired (a)	1,996		2,055
Construction work in progress	3,773		2,873
Total property, plant and equipment	71,165		69,692
Less accumulated depreciation	(18,771)		(18,399)
Nuclear fuel	3,379		3,337
Less accumulated amortization	(3,008)		(2,988)
Property, plant and equipment, net	$	52,765	$	51,642

(a)Amounts include Sherco 1 and 3 and A.S. King for NSP-Minnesota; Comanche Units 2 and 3, Craig Units 1 and 2, Hayden Units 1 and 2 and coal generation assets at Pawnee pending facility gas conversion for PSCo; and Tolk Unit 1 and 2 and coal generation assets at Harrington pending facility gas conversion for SPS. Amounts are presented net of accumulated depreciation.