Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Issuance of common units for ENLK public common units related to the Merger	$ 399,000,000		$ 399,000,000.0
Valuation allowance	151,600,000	$ 153,300,000
Change in valuation allowance	(1,700,000)	153,300,000	$ 0
Unrecognized tax benefits	0	$ 0
Domestic Tax Authority
Income Taxes [Line Items]
Operating loss carryforwards	2,700,000,000
Deferred tax assets, operating loss carryforwards, domestic	573,600,000
Operating loss carryforwards, amount carried indefinitely	2,500,000,000
Operating loss carryforwards, amount carried for a maximum of twenty years	200,000,000
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carryforwards	1,300,000,000
Deferred tax assets, operating loss carryforwards, domestic	$ 59,600,000