Segment Information (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Results from Operations by Reportable Segment

NSP-Minnesota’s segment information:

	Three Months Ended Sept. 30
(Millions of Dollars)	2023		2022
Regulated Electric
Total revenues (a)	$	1,513	$	1,730
Net income	263		275
Regulated Natural Gas
Operating revenues (b)	$	65	$	102
Intersegment revenue	1		—
Total revenues	$	66	$	102
Net loss	(8)		(12)
All Other
Total revenues	$	13	$	12
Net income	5		6
Consolidated Total
Operating revenues (a)(b)	$	1,592	$	1,844
Reconciling eliminations	(1)		—
Total operating revenues	$	1,591	$	1,844
Net income	260		269

(a)    Operating revenues include $130 million and $132 million of affiliate electric revenue for the three months ended Sept. 30, 2023 and 2022.

(b)    Operating revenues include an immaterial amount of affiliate gas revenue for the three months ended Sept. 30, 2023 and 2022.

	Nine Months Ended Sept. 30
(Millions of Dollars)	2023		2022
Regulated Electric
Total revenues (a)	$	3,958	$	4,308
Net income	508		486
Regulated Natural Gas
Operating revenues (b)	$	563	$	703
Intersegment revenue	2		1
Total revenues	$	565	$	704
Net income	13		21
All Other
Total revenues	$	35	$	33
Net income	5		7
Consolidated Total
Operating revenues (a)(b)	$	4,558	$	5,045
Reconciling eliminations	(2)		(1)
Total operating revenues	$	4,556	$	5,044
Net income	526		514

(a)    Operating revenues include $368 million and $394 million of affiliate electric revenue for the six months ended Sept. 30, 2023 and 2022.

(b)    Operating revenues include an immaterial amount of affiliate gas revenue for the nine months ended Sept. 30, 2023 and 2022.