XML 49 R36.htm IDEA: XBRL DOCUMENT v3.25.2
Borrowings and Other Financing Instruments Revolving Credit Facilities (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Nov. 30, 2024
Line of Credit Facility [Line Items]        
Shares Issued, Price Per Share       $ 64.44
Forward Equity Agreements        
Line of Credit Facility [Line Items]        
Common stock, initial shares in an agreement       18,300
Common stock, additional shares in an agreement       2,800
Period End Settlement Price, in Shares 21,100      
Period End Settlement Price, in Cash $ 1,350,000      
Period End Net Cash Settlement Price 100,000      
Period End Net Share Settlement Price 1,500      
Expected Settlement Price 1,360,000      
Revolving Credit Facility [Member]        
Line of Credit Facility [Line Items]        
Credit Facility [1] 4,750,000      
Outstanding [2] 862,000      
Available 3,888,000      
Direct advances on the credit facility outstanding 0   $ 0  
Revolving Credit Facility [Member] | PSCo        
Line of Credit Facility [Line Items]        
Credit Facility [1] 1,200,000 $ 700,000    
Outstanding [2] 30,000      
Available 1,170,000      
Revolving Credit Facility [Member] | NSP-Minnesota        
Line of Credit Facility [Line Items]        
Credit Facility [1] 800,000 700,000    
Outstanding [2] 12,000      
Available 788,000      
Revolving Credit Facility [Member] | SPS        
Line of Credit Facility [Line Items]        
Credit Facility [1] 600,000 500,000    
Outstanding [2] 0      
Available 600,000      
Revolving Credit Facility [Member] | NSP-Wisconsin        
Line of Credit Facility [Line Items]        
Credit Facility [1] 150,000      
Outstanding [2] 0      
Available 150,000      
Revolving Credit Facility [Member] | Xcel Energy Inc.        
Line of Credit Facility [Line Items]        
Credit Facility [1] 2,000,000 $ 1,500,000    
Outstanding [2] 820,000      
Available $ 1,180,000      
[1] Expires in December 2029.
[2] Includes outstanding commercial paper and letters of credit.