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Related Party Transactions (Schedule of related Party Transactions) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Interest Expense	$ 379	$ 389	$ 746	$ 1,125	$ 1,485	$ 1,319	$ 1,117
Affiliated Entity
Related Party Transaction [Line Items]
Interest income, Related Party [Domain]					12	9	10
Affiliated Entity | Related Party
Related Party Transaction [Line Items]
Interest Expense					26	36	95
Other income					23	28	17
Electricity, Generation [Member] | Affiliated Entity
Related Party Transaction [Line Items]
Cost of Sales—Non-Regulated					143	576	352
Revenue, Related Party, Type [Extensible Enumeration]					746	1,055	1,093
Electricity | Affiliated Entity
Related Party Transaction [Line Items]
Cost of Sales—Non-Regulated					$ 34	$ 39	$ 39

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