Derivatives - Schedule of Foreign Currency Derivatives (Details) - 6 months ended Jun. 30, 2026 - Fair Value Hedges of Existing Debt - Foreign currency derivatives - Southern Company parent € in Millions, $ in Millions |
USD ($) |
EUR (€) |
|---|---|---|
| Derivative [Line Items] | ||
| Pay Notional | $ 1,476 | |
| Pay Rate | 3.39% | |
| Receive Notional | € | € 1,250 | |
| Receive Rate | 1.88% | |
| Fair Value Gain (Loss) | $ (63) |
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- Definition Derivative Notional Amount, Pay No definition available.
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- Definition Fair value gain (Loss). No definition available.
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- Definition Notional Amount Of Foreign Currency Derivatives, Pay Rate No definition available.
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- Definition Notional Amount Of Foreign Currency Derivatives, Receive Rate No definition available.
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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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