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Debt - Subsidiary Non-recourse Debt in Default or Accelerated (Details)
$ in Millions
Jun. 30, 2026
USD ($)
Nonrecourse Debt Default [Line Items]  
Debt Default Amount $ 19
Materiality threshold for cash distribution from business to Parent 20.00%
Debt defaults at risk of causing cross default 0
Mount Olive Solar  
Nonrecourse Debt Default [Line Items]  
Debt Default Amount $ 1
Covenant Violation [Member] | AES llumina [Member]  
Nonrecourse Debt Default [Line Items]  
Debt Default Amount 19
Net Assets (33)
Covenant Violation [Member] | Mount Olive Solar  
Nonrecourse Debt Default [Line Items]  
Debt Default Amount 0
Net Assets $ (1)