Segment Information (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Results from Operations by Reportable Segment

NSP-Minnesota’s segment information:

	Three Months Ended March 31
(Millions of Dollars)	2021		2020
Regulated Electric
Total revenues (a)	$	1,139	$	1,035
Net income	107		86
Regulated Natural Gas
Total revenues (b)	$	204	$	206
Net income	20		23
All Other
Total revenues	$	9	$	9
Net income (loss)	1		(2)
Consolidated Total
Total revenues (a)(b)	$	1,352	$	1,250
Net income	128		107

(a)    Total revenues include $115 million and $110 million of affiliate electric revenue for the three months ended March 31, 2021 and 2020.

(b)    Total revenues include an immaterial amount of affiliate gas revenue for the three months ended March 31, 2021 and 2020