Derivatives - Narrative (Details) $ in Millions |
Jun. 30, 2026
USD ($)
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| Interest rate swaps | |
| Derivative [Line Items] | |
| Fair value of credit-risk derivative, net liability | $ 35 |
| Natural gas supply contracts | |
| Derivative [Line Items] | |
| Fair value of credit-risk derivative, net liability | 102 |
| Natural gas supply contracts | Letter of Credit | |
| Derivative [Line Items] | |
| Collateral posted | $ 55 |
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value of credit risk derivative asset after deduction of credit risk derivative liability. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- 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
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