Derivatives - Components of Commodity Swap Gain (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Derivatives
Change in fair value of interest rate swap	$ (26.1)	$ (1.4)
Gain (loss) on derivative activity	(29.0)	11.9
EnLink Midstream Partners, LP \| Commodity swaps
Derivatives
Change in fair value of interest rate swap	(26.1)	(1.4)
Realized gain (loss) on derivatives	(2.9)	13.3
Gain (loss) on derivative activity	$ (29.0)	$ 11.9

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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