Exit Costs - Exit Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) - Exit Costs $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)	[1]
Exit costs included in accrued liabilities in consolidated balance sheet
Balance at December 31, 2023	$ 399,989
Accretion of discount	30,155
Exit and termination costs	(2,097)
Payments	(71,506)
Balance at September 30, 2024	$ 356,541

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