Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2023

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

NSP-Wisconsin's segment information:

	Three Months Ended June 30
(Millions of Dollars)	2023		2022
Regulated Electric
Total revenues (a)	$	236	$	243
Net income	30		15
Regulated Natural Gas
Total revenues	$	24	$	35
Net loss	(3)		(1)
All Other
Net (loss) income	$	(1)	$	1
Consolidated Total
Total operating revenues	$	260	$	278
Net income	26		15

(a)Total revenues include $51 million and $52 million of affiliate electric revenue for the three months ended June 30, 2023 and 2022, respectively.

	Six Months Ended June 30
(Millions of Dollars)	2023		2022
Regulated Electric
Total revenues (a)	$	490	$	493
Net income	63		47
Regulated Natural Gas
Operating revenues	$	101	$	113
Intersegment revenue	1		—
Total revenues	$	102	$	113
Net income	8		14
All Other
Net income	$	—	$	1
Consolidated Total
Operating revenues (a)	$	592	$	606
Reconciling eliminations	(1)		—
Total operating revenues	$	591	$	606
Net income	71		62