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Commitments and Contingencies Environmental Requirements - Water and Waste (Details)
$ in Millions
Jun. 30, 2024
USD ($)
Site Contingency [Line Items]  
Accrued liability of sites under investigation as part of federal CCR program $ 40
Legacy CCR Investigation and Remediation Costs 15
Cost of Coal Ash Removal Projects 100
Federal Clean Water Act Section 316 (b) | Capital Addition Purchase Commitments  
Site Contingency [Line Items]  
Liability for estimated cost to comply with entrainment regulation $ 50