Derivatives - Components of Gain (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Derivatives
Change in fair value of derivatives	$ (7.9)	$ 13.0
Realized gain (loss) on derivatives	(7.8)	18.0
Gain (loss) on derivative activity	(83.4)	19.2
Commodity swaps
Derivatives
Realized gain (loss) on derivatives	(75.5)	6.2
EnLink Midstream Partners, LP \| Commodity swaps
Derivatives
Change in fair value of derivatives	(7.9)	13.0
Realized gain (loss) on derivatives	(75.5)	6.2
Gain (loss) on derivative activity	$ (83.4)	$ 19.2

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

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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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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