Exit Costs - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Accrued obligations		$ 344,308,000
North Louisiana
Restructuring Cost And Reserve [Line Items]
Exit and termination costs		2,100,000	$ 57,700,000
Exit cost					$ 479,800,000
Accrued obligations		344,300,000
Accretion expense		39,200,000	41,900,000	$ 43,600,000
Divestiture contract obligation, short term		87,000,000
Pennsylvania
Restructuring Cost And Reserve [Line Items]
Exit cost		126,000	$ 345,000	$ 579,000
Pennsylvania | Capacity Releases on Transportation Pipelines
Restructuring Cost And Reserve [Line Items]
Exit cost	$ 10,400,000
Accrued obligations		$ 0