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Derivatives - Components of Gain (Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Derivatives      
Change in fair value of derivatives $ (12.1) $ 40.2 $ (12.4)
Gain (loss) on derivative activity 20.7 14.3 (159.1)
EnLink Midstream Partners, LP | Commodity Swaps      
Derivatives      
Change in fair value of derivatives (12.1) 40.2 (12.4)
Realized gain (loss) on derivatives 32.8 (25.9) (146.7)
Gain (loss) on derivative activity $ 20.7 $ 14.3 $ (159.1)