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Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2025
Related Party Transactions [Abstract]  
Related Party Transactions
Significant affiliate transactions among the companies and related parties for the years ended Dec. 31:
(Millions of Dollars)202520242023
Operating expenses:
Other operating expenses — paid to Xcel Energy Services Inc.$280 $244 $245 
Interest expense4 3 4 
Accounts receivable and payable with affiliates at Dec. 31 were:
20252024
(Millions of Dollars)Accounts ReceivableAccounts PayableAccounts ReceivableAccounts Payable
NSP-Minnesota$1 $— $2 $— 
PSCo6 — 8 — 
Other subsidiaries of Xcel Energy Inc.18 46 10 27 
$25 $46 $20 $27