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Leases (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |
Finance Lease, Right-of-Use Asset, Amortization |  | $ 1 |  | $ 0 |  | $ 2 |  | $ 1 |  |
Finance Lease, Interest Expense |  | 3 |  | 4 |  | 7 |  | 8 |  |
Finance Lease, Cost |  | 4 |  | 4 |  | 9 |  | 9 |  |
Operating Lease, Cost |  | 68 | [1] | 73 | [1] | 137 | [2] | 145 | [2] |
Lessee, Operating Lease, Liability, to be Paid |  | 1,467 |  |  |  | 1,467 |  |  |  |
Finance Lease, Liability, Payment, Due | [3] | 213 |  |  |  | 213 |  |  |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |  | (280) |  |  |  | (280) |  |  |  |
Finance Lease, Liability, Undiscounted Excess Amount | [3] | (150) |  |  |  | (150) |  |  |  |
Operating Lease, Liability |  | 1,187 |  |  |  | 1,187 |  |  |  |
Finance Lease, Liability | [3] | 63 |  |  |  | 63 |  |  |  |
Operating Lease, Liability, Current |  | (226) |  |  |  | (226) |  |  |  | $ (226)
Finance Lease, Liability, Current | [3] | (2) |  |  |  | (2) |  |  |  |
Operating lease liabilities |  | 961 |  |  |  | 961 |  |  |  | $ 1,038
Finance Lease, Liability, Noncurrent | [3] | 61 |  |  |  | 61 |  |  |  |
Short-term Lease, Cost |  | $ 1 |  | 3 |  | $ 2 |  | 5 |  |
WYCO, Inc. |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 50.00% |  |  |  | 50.00% |  |  |  |
PPAs |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |
Operating Lease, Cost |  | $ 57 |  | 61 |  | $ 115 |  | 121 |  |
Lessee, Operating Lease, Liability, to be Paid |  | 1,107 |  |  |  | 1,107 |  |  |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |  | (135) |  |  |  | (135) |  |  |  |
Operating Lease, Liability |  | 972 |  |  |  | 972 |  |  |  |
Property, Plant and Equipment, Other Types |  |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |  |
Operating Lease, Cost |  | 11 | [4] | $ 12 | [4] | 22 | [5] | $ 24 | [5] |
Lessee, Operating Lease, Liability, to be Paid |  | 360 |  |  |  | 360 |  |  |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |  | (145) |  |  |  | (145) |  |  |  |
Operating Lease, Liability |  | $ 215 |  |  |  | $ 215 |  |  |  |
[1] | 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.
[2] | 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.
[3] | Excludes certain amounts related to Xcel Energy’s 50% ownership interest in WYCO.
[4] | Includes short-term lease expense of $1 million and $3 million for 2024 and 2023, respectively.
[5] | Includes short-term lease expense of $2 million and $5 million for 2024 and 2023, respectively.

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