Exit Costs - Exit Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) - Exit Costs $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)	[1]
Exit costs included in accrued liabilities in consolidated balance sheet
Balance at December 31, 2023	$ 399,989
Accretion of discount	20,409
Payments	(50,430)
Balance at March 31, 2024	$ 369,968

[1] Includes the divestiture contract obligation and the transportation contract capacity release obligation.