Investment in Unconsolidated Affiliates (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Equity method investments
Contributions	$ 9.4	$ 49.7
Distributions	0.0	(0.1)
Equity in income (loss)	(0.8)	(0.1)
Total investment in unconsolidated affiliates	$ 159.8		$ 150.5
GCF
Equity method investments
Ownership interest	38.75%
Contributions	$ 9.4	6.2
Equity in income (loss)	$ (1.8)	(1.1)
Cedar Cove JV
Equity method investments
Ownership interest	30.00%
Distributions	$ 0.0	(0.1)
Equity in income (loss)	$ (0.7)	(0.6)
Matterhorn JV
Equity method investments
Ownership interest	15.00%
Contributions	$ 0.0	43.5
Equity in income (loss)	1.7	$ 1.6
EnLink Midstream Partners, LP
Equity method investments
Total investment in unconsolidated affiliates	151.8		143.2
EnLink Midstream Partners, LP \| GCF
Equity method investments
Total investment in unconsolidated affiliates	52.1		44.5
EnLink Midstream Partners, LP \| Cedar Cove JV
Equity method investments
Total investment in unconsolidated affiliates	(8.0)		(7.3)
EnLink Midstream Partners, LP \| Matterhorn JV
Equity method investments
Total investment in unconsolidated affiliates	$ 107.7		$ 106.0

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