Exit and Termination Costs - Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Exit Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	$ 423,742	[1]
Accretion of discount	22,408	[1]
Changes in estimate	24,776	[1]
Payments	(50,525)	[1]
Ending balance	420,401	[1]
Termination Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	10
Accretion of discount	0
Changes in estimate	0
Payments	(10)
Ending balance	$ 0

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