Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

NSP-Wisconsin's segment information:

	Three Months Ended June 30
(Millions of Dollars)	2024		2023
Regulated Electric
Total revenues (a)	$	246	$	236
Net income	23		30
Regulated Natural Gas
Total revenues	$	21	$	24
Net loss	(2)		(3)
All Other
Net income	$	2	$	(1)
Consolidated Total
Total revenues (a)	$	267	$	260
Net income	23		26

(a)Total revenues include $54 million and $51 million of affiliate electric revenue for the three months ended June 30, 2024 and 2023, respectively.

	Six Months Ended June 30
(Millions of Dollars)	2024		2023
Regulated Electric
Total revenues (a)	$	502	$	490
Net income	56		63
Regulated Natural Gas
Operating revenues	$	75	$	101
Intersegment revenue	—		1
Total revenues	$	75	$	102
Net income	8		8
All Other
Net income	$	2	$	—
Consolidated Total
Total revenues	$	577	$	592
Reconciling eliminations	—		(1)
Total operating revenues (a)	$	577	$	591
Net income	66		71

(a)Total revenues include $107 million and $101 million of affiliate electric revenue for the six months ended June 30, 2024 and 2023, respectively.