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Commitments (Long-Term Purchase Commitments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Electricity Purchase Contracts
Long-Term Purchase Commitment [Line Items]
Purchases Under Long Term Contracts	$ 797	$ 1,134	$ 1,156
Purchase Obligation, Due in Next Twelve Months	759
Purchase Obligation, Due in Second Year	731
Purchase Obligation, Due in Third Year	660
Purchase Obligation, Due in Fourth Year	648
Purchase Obligation, Due in Fifth Year	640
Future Commitments Thereafter	5,484
Future Commitments Total	8,922
Fuel Purchase Contracts
Long-Term Purchase Commitment [Line Items]
Purchases Under Long Term Contracts	1,869	1,982	3,375
Purchase Obligation, Due in Next Twelve Months	1,701
Purchase Obligation, Due in Second Year	1,005
Purchase Obligation, Due in Third Year	774
Purchase Obligation, Due in Fourth Year	528
Purchase Obligation, Due in Fifth Year	474
Future Commitments Thereafter	1,259
Future Commitments Total	5,741
Other Purchase Contracts
Long-Term Purchase Commitment [Line Items]
Purchases Under Long Term Contracts	3,507	$ 3,181	$ 3,602
Purchase Obligation, Due in Next Twelve Months	2,485
Purchase Obligation, Due in Second Year	262
Purchase Obligation, Due in Third Year	192
Purchase Obligation, Due in Fourth Year	140
Purchase Obligation, Due in Fifth Year	142
Future Commitments Thereafter	892
Future Commitments Total	$ 4,113

X

- Definition

The total minimum amount the entity agreed to spend under the long-term purchase commitment

+ References

No definition available.

+ Details

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- Definition

The actual amount the entity purchased under the long-term purchase commitment

+ References

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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment, which payments are due after the fifth year following the balance sheet date

+ References

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.

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- Definition

Amount of purchase arrangement to be paid in fifth fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of purchase arrangement to be paid in fourth fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of purchase arrangement to be paid in next fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of purchase arrangement to be paid in second fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of purchase arrangement to be paid in third fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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