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Prepetition Revolving Credit Facility, Senior Notes and Exit Debt - Additional Information (Detail) - USD ($)
4 Months Ended
Apr. 23, 2021
Jun. 30, 2021
Jan. 31, 2021
Jan. 22, 2021
Dec. 31, 2020
Apr. 28, 2020
Apr. 26, 2020
Debt Instrument [Line Items]              
Borrowings outstanding         $ 436,000,000    
Accrued interest         $ 47,636,000    
Unamortized premium   $ 800,000          
Debt issuance costs   3,600,000          
Senior Notes [Member]              
Debt Instrument [Line Items]              
Accrued interest $ 44,900,000            
Pre-tax gain on extinguishment of debt 1,100,000,000            
Prepetition Revolving Credit Facility as credit facility in place prior to the bankruptcy Petition Date [Member]              
Debt Instrument [Line Items]              
Borrowings outstanding 103,500,000 $ 133,500,000 $ 442,000,000.0 $ 950,000,000.0     $ 436,000,000.0
Amount available for general purposes           $ 442,000,000.0 $ 950,000,000.0
Claims settled in cash 279,600,000            
Aggregate amount of rollover debt $ 200,000,000.0            
Prepetition Revolving Credit Facility as credit facility in place prior to the bankruptcy Petition Date [Member] | Financial Letter of Credit [Member]              
Debt Instrument [Line Items]              
Borrowings outstanding     $ 6,000,000.0