Segments and Related Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Results from Operations by Reportable Segment

PSCo’s segment information:

(Millions of Dollars)	2021		2020		2019
Regulated Electric
Operating revenues — external	$	3,413	$	3,116	$	3,033
Intersegment revenue	1		1		1
Total revenues	$	3,414	$	3,117	$	3,034
Depreciation and amortization	566		497		455
Interest charges and financing costs	179		173		173
Income tax (benefit) expense	(16)		13		45
Net income	495		460		465
Regulated Natural Gas
Total revenues	$	1,355	$	1,024	$	1,161
Depreciation and amortization	171		152		141
Interest charges and financing costs	53		50		50
Income tax expense	45		29		33
Net income	168		126		119
All Other
Total revenues (a)	$	47	$	43	$	43
Depreciation and amortization	7		6		6
Interest charges and financing costs	2		1		1
Income tax expense	4		3		2
Net (loss) income	(3)		2		(6)
Consolidated Total
Total revenues (a)	$	4,816	$	4,184	$	4,238
Reconciling eliminations	(1)		(1)		(1)
Total operating revenues	$	4,815	$	4,183	$	4,237
Depreciation and amortization	744		655		602
Interest charges and financing costs	234		224		224
Income tax expense	33		45		80
Net income	660		588		578

(a)    Operating revenues include $5 million of other affiliate revenue for the years ended Dec. 31, 2021, 2020 and 2019, respectively. See Note 13 for further information.