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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Asset Retirement Obligations
Xcel Energy’s AROs were as follows:
(Millions 
of Dollars)		Jan. 1, 2024
Amounts Incurred (a)
Amounts Settled Accretion
Cash Flow Revisions (b)
Dec. 31, 2024
Electric
Nuclear$2,107 $— $— $106 $263 $2,476 
Wind526 — — 19 (36)509 
Steam, hydro and other production361 109 (6)18 13 495 
Distribution49 — — 2 — 51 
Natural gas
Transmission and distribution172 — — 8 (1)179 
Other
Miscellaneous3 — — — — 3 
Total liability$3,218 $109 $(6)$153 $239 $3,713 
(a)Amounts incurred largely pertain to CCR coal ash regulations and new obligations associated with Sherco Solar Unit 1 , which was placed in service in 2024.
(b)In 2024, AROs were revised for changes in timing and estimates of cash flows. Changes were driven by updated assumptions in the NSP-Minnesota nuclear decommissioning triennial filing coupled with discount rate and escalation rate changes. Wind, steam, hydro and other production AROs were revised due to the results of the 2024 dismantling studies and changes in cost estimates to remediate ash containment facilities.
(Millions 
of Dollars)		Jan. 1, 2023
Amounts Incurred (a)
Amounts
Settled 		Accretion
Cash Flow Revisions (b)
Dec. 31, 2023
Electric
Nuclear$2,160 $— $— $105 $(158)$2,107 
Wind514 10 — 19 (17)526 
Steam, hydro and other production348 — (1)15 (1)361 
Distribution48 — — 1 — 49 
Natural gas
Transmission and distribution 307 — — 14 (149)172 
Other
Miscellaneous3 — — — — 3 
Total liability$3,380 $10 $(1)$154 $(325)$3,218 
(a)Amounts incurred relate to the Northern Wind farm placed in service in NSP-Minnesota.
(b)In 2023, AROs were revised for changes in timing and estimates of cash flows. Revisions in wind and nuclear AROs were primarily incurred due to changes in useful lives. Changes in gas transmission and distribution AROs were a result of updated gas line mileage and number of services, as well as changes to inflation and discount rate assumptions.
Assets and Liabilities, Lessee [Table Text Block]
Operating lease ROU assets:
(Millions of Dollars)Dec. 31, 2024Dec. 31, 2023
PPAs$1,802 $1,832 
Other373 315 
Gross operating lease ROU assets2,175 2,147 
Accumulated amortization(1,115)(930)
Net operating lease ROU assets$1,060 $1,217 
Finance lease ROU assets:
(Millions of Dollars)Dec. 31, 2024Dec. 31, 2023
Gas storage facilities$160 $160 
Gas pipeline21 21 
Gross finance lease ROU assets181 181 
Accumulated amortization(70)(67)
Net finance lease ROU assets$111 $114 
Lease, Cost [Table Text Block]
Components of lease expense:
(Millions of Dollars)202420232022
Operating leases
PPA capacity payments$228 $241 $241 
Other operating leases (a)
43 42 39 
Total operating lease expense (b)
$271 $283 $280 
Finance leases
Amortization of ROU assets$3 $3 $4 
Interest expense on lease liability15 15 16 
Total finance lease expense$18 $18 $20 
(a)Includes short-term lease expense of $4 million, $3 million, and $6 million for 2024, 2023 and 2022, respectively.
(b)PPA capacity payments are included in electric fuel and purchased power on the consolidated statements of income. Expense for other operating leases is included in O&M expense and electric fuel and purchased power.
Finance Lease, Liability, Maturity [Table Text Block]
Commitments under operating and finance leases as of Dec. 31, 2024:
(Millions of Dollars)
PPA (a) (b)
Operating
Leases
Other Operating
Leases
Total
Operating
Leases
Finance
 Leases (c)
2025$240 $31 $271 $10 
2026210 33 243 9 
2027162 27 189 8 
2028107 27 134 8 
202959 22 81 8 
Thereafter199 238 437 165 
Total minimum obligation977 378 1,355 208 
Interest component of obligation(115)(146)(261)(146)
Present value of minimum obligation$862 232 1,094 62 
Less current portion(227)(2)
Noncurrent operating and finance lease liabilities$867 $60 
Weighted-average remaining lease term in years8.735.8
(a)Amounts do not include PPAs accounted for as executory contracts and/or contingent payments, such as energy payments on renewable PPAs.
(b)PPA operating leases contractually expire at various dates through 2039.
(c)Excludes certain amounts related to Xcel Energy’s 50% ownership interest in WYCO.
Estimated Future Payments for Capacity and Energy Pursuant to Purchased Power Agreements
At Dec. 31, 2024, the estimated future payments for capacity and energy that the utility subsidiaries of Xcel Energy are obligated to purchase pursuant to these non-lease contracts, subject to availability, were as follows:
(Millions of Dollars)Capacity
Energy (a)
2025$51 $111 
202634 64 
202714 21 
20286 22 
20296 22 
Thereafter2 — 
Total$113 $240 
(a)Excludes contingent energy payments for renewable energy PPAs.
Estimated Minimum Purchases Under Fuel Contracts
Estimated minimum purchases under these contracts as of Dec. 31, 2024:
(Millions of Dollars)CoalNuclear fuelNatural gas supplyNatural gas storage and transportation
2025$337 $168 $420 $345 
2026130 62 11 350 
202776 133 — 312 
20281 19 — 185 
20291 67 — 103 
Thereafter1 49 — 632 
Total$546 $498 $431 $1,927