Exit and Termination Costs - Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Exit Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	$ 423,742	[1]
Accretion of discount	11,115	[1]
Payments	(29,115)	[1]
Ending balance	405,742	[1]
Termination Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	10
Accretion of discount	0
Payments	0
Ending balance	$ 10

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