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Gas And Electric Supply Contractual Obligations (Detail)
$ in Millions
Dec. 31, 2020
USD ($)
Total $ 571.8
2021 57.2
2022 50.6
2023 47.9
2024 39.0
2025 37.6
2026 & Beyond 339.5
Gas Supply Contracts  
Total 556.2
2021 55.9
2022 49.3
2023 46.5
2024 37.6
2025 36.2
2026 & Beyond 330.7
Electric Supply Contracts  
Total 15.6
2021 1.3
2022 1.3
2023 1.4
2024 1.4
2025 1.4
2026 & Beyond $ 8.8