Revenues (Tables)

12 Months Ended

Dec. 31, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Revenue is classified by the type of goods/services rendered and market/customer type. PSCo’s operating revenues consisted of the following:

	Year Ended Dec. 31, 2023
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	1,295	$	1,109	$	19	$	2,423
C&I	1,816		459		30		2,305
Other	52		—		5		57
Total retail	3,163		1,568		54		4,785
Wholesale	237		—		—		237
Transmission	90		—		—		90
Other	61		132		—		193
Total revenue from contracts with customers	3,551		1,700		54		5,305
Alternative revenue and other	180		34		—		214
Total revenues	$	3,731	$	1,734	$	54	$	5,519

	Year Ended Dec. 31, 2022
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	1,341	$	1,203	$	15	$	2,559
C&I	1,843		479		32		2,354
Other	52		—		—		52
Total retail	3,236		1,682		47		4,965
Wholesale	286		—		—		286
Transmission	88		—		—		88
Other	53		151		—		204
Total revenue from contracts with customers	3,663		1,833		47		5,543
Alternative revenue and other	132		27		6		165
Total revenues	$	3,795	$	1,860	$	53	$	5,708

	Year Ended Dec. 31, 2021
(Millions of Dollars)	Electric		Natural Gas		All Other		Total
Major revenue types
Revenue from contracts with customers:
Residential	$	1,174	$	816	$	12	$	2,002
C&I	1,660		308		30		1,998
Other	49		—		—		49
Total retail	2,883		1,124		42		4,049
Wholesale	228		—		—		228
Transmission	75		—		—		75
Other	44		159		—		203
Total revenue from contracts with customers	3,230		1,283		42		4,555
Alternative revenue and other	183		72		5		260
Total revenues	$	3,413	$	1,355	$	47	$	4,815