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Commitments and Contingencies - Unconditional Purchase Obligations (Details) $ in Millions | Dec. 31, 2023 USD ($)
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Minimum future commitments for purchase obligations |
Total Amounts Committed | $ 9,657.5
2024 | 1,448.8
2025 | 1,178.5
2026 | 1,028.8
2027 | 1,028.2
2028 | 1,031.8
Later Years | 3,941.4
Nuclear | Electric |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 6,280.6
2024 | 600.3
2025 | 634.5
2026 | 681.6
2027 | 730.4
2028 | 782.6
Later Years | 2,851.2
Coal supply and transportation | Electric |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 549.0
2024 | 358.3
2025 | 164.6
2026 | 26.1
2027 | 0.0
2028 | 0.0
Later Years | 0.0
Purchased power | Electric |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 333.5
2024 | 56.7
2025 | 56.4
2026 | 57.5
2027 | 52.1
2028 | 48.4
Later Years | 62.4
Other | Electric |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 100.6
2024 | 13.9
2025 | 13.3
2026 | 12.9
2027 | 11.6
2028 | 10.2
Later Years | 38.7
Supply and transportation | Natural gas |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 1,777.2
2024 | 381.2
2025 | 274.9
2026 | 214.8
2027 | 197.4
2028 | 155.7
Later Years | 553.2
Non-Utility Energy Infrastructure | Purchased power | Electric |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 611.8
2024 | 34.4
2025 | 34.8
2026 | 35.9
2027 | 36.7
2028 | 34.8
Later Years | 435.2
Non-Utility Energy Infrastructure | Natural gas storage and transportation | Natural gas |
Minimum future commitments for purchase obligations |
Total Amounts Committed | 4.8
2024 | 4.0
2025 | 0.0
2026 | 0.0
2027 | 0.0
2028 | 0.1
Later Years | $ 0.7

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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of purchase arrangement to be paid after 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 No definition available. + Details
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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 No definition available. + Details
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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 No definition available. + Details
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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). + References No definition available. + Details
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X
- 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). + References No definition available. + Details
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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). + References No definition available. + Details
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