Document and Entity Information
Document and Entity Information | Jul. 19, 2021 |
Cover [Abstract] | |
Entity Registrant Name | NORTHERN STATES POWER CO /WI/ |
Security 12b Title | Common Stock, $2.50 par value per share |
Trading Symbol | XEL |
Security Exchange Name | NASDAQ |
Amendment Flag | false |
Entity Central Index Key | 0000072909 |
Document Type | 8-K |
Document Period End Date | Jul. 19, 2021 |
Entity Incorporation State Country Code | WI |
Entity File Number | 001-03140 |
Entity Tax Identification Number | 39-0508315 |
Entity Address, Address Line One | 1414 West Hamilton Avenue |
Entity Address, City or Town | Eau Claire |
Entity Address, State or Province | WI |
Entity Address, Postal Zip Code | 54701 |
City Area Code | (715) |
Local Phone Number | 839-2625 |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Entity Emerging Growth Company | false |