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Commitment and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
Finance Lease, Liability, Fiscal Year Maturity
Commitments under operating and finance leases as of Sept. 30, 2025:
(Millions of Dollars)PPA Operating
Leases		Other Operating
Leases		Total Operating
Leases
Finance
 Leases (a)
Total minimum obligation$667 $516 $1,183 $2,211 
Interest component of obligation(98)(200)(298)(900)
Present value of minimum obligation$569 $316 885 1,311 
Less current portion(114)(39)
Noncurrent operating and finance lease liabilities$771 $1,272 
(a)Excludes certain amounts related to PSCo’s lease obligations given Xcel Energy’s 50% ownership interest in WYCO.
Lease, Cost
Components of lease expense:
Three Months Ended Sept. 30
(Millions of Dollars)20252024
Operating leases
PPA capacity payments$47 $57 
Other operating leases (a)
9 11 
Total operating lease expense$56 $68 
Finance leases
Amortization of ROU assets$4 $1 
Interest expense on lease liability14 4 
Total finance lease expense$18 $5 
(a)Includes immaterial short-term lease expense.

Nine Months Ended Sept. 30
(Millions of Dollars)20252024
Operating leases
PPA capacity payments$158 $172 
Other operating leases (a)
32 33 
Total operating lease expense$190 $205 
Finance leases
Amortization of ROU assets$6 $3 
Interest expense on lease liability22 11 
Total finance lease expense$28 $14 
(a)Includes immaterial short-term lease expense.