Borrowings and Other Financing Instruments, Credit Facility (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
||||
|---|---|---|---|---|---|---|
| Payable to Affiliates | ||||||
| Line of Credit Facility [Line Items] | ||||||
| Notes Payable, Current | $ 0 | $ 0 | ||||
| Credit Facility | ||||||
| Line of Credit Facility [Line Items] | ||||||
| Credit Facility | [1] | 150 | ||||
| Outstanding | [2] | 0 | ||||
| Available | $ 150 | |||||
| ||||||
| X | ||||||||||
- Definition Represents the aggregate of total long-term debt, including current maturities and short-term debt. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|