Certain Provisions of the ENLK Partnership Agreement - Summary of Distribution (Details) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended		3 Months Ended																	6 Months Ended
	Sep. 15, 2023	Dec. 15, 2022	May 13, 2022	Feb. 11, 2022	Jan. 31, 2022	Dec. 31, 2021	Mar. 14, 2024	Dec. 31, 2023	Dec. 14, 2023	Sep. 30, 2023	Sep. 14, 2023	Jun. 30, 2023	Jun. 14, 2023	Mar. 31, 2023	Mar. 14, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 14, 2022	Jun. 14, 2022	Dec. 14, 2021	Jun. 14, 2021
Series B Preferred Units | Limited Partner
Partnership agreement
PIK distributions (in shares)								136,439		136,099		135,759		135,421		0	0	0	0	0	151,626	151,248	150,871
Cash distribution (in millions)								$ 15.3		$ 15.3		$ 15.3		$ 15.2		$ 17.3	$ 17.3	$ 17.3	$ 17.5	$ 19.2	$ 17.1	$ 17.0	$ 17.0
Series B Preferred Units | Limited Partner | Distribution, Tranche One
Partnership agreement
Dividends, preferred stock				$ 17.3	$ 1.0	$ 0.9
Series B Preferred Units | Limited Partner | Distribution, Tranche Two
Partnership agreement
Dividends, preferred stock			$ 17.2		$ 0.3
Series C Preferred Units
Partnership agreement
Cash distribution (in millions)									$ 9.3		$ 9.3		$ 8.7		$ 8.4									$ 11.4	$ 12.0	$ 12.0	$ 12.0
Distribution rate per unit	0.26161%	6.00%							9.782%		9.618%		9.051%		8.846%									6.00%	6.00%	6.00%	6.00%
Partners capital account, redemption price (in dollars per share)		$ 1,000
Partners' capital account, distributions, variable floating rate percentage	4.11%	4.11%
Series C Preferred Units | Forecast
Partnership agreement
Cash distribution (in millions)							$ 9.0
Distribution rate per unit							9.749%