Prepetition Revolving Credit Facility, Senior Notes and Exit Debt - Additional Information (Detail) - USD ($) $ in Thousands	4 Months Ended	12 Months Ended
	Apr. 23, 2021	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2022	Jan. 31, 2021	Jan. 22, 2021	Apr. 26, 2020
Debt Instrument [Line Items]
Contractual interest expense not recorded	$ 35,390	$ 98,027
Write-off of deferred arrangement fees and unamortized discount and debt issuance costs	1,793	27,552
Unamortized premium				$ 700
Debt issuance costs				$ 2,800
Senior Notes [Member]
Debt Instrument [Line Items]
Contractual interest expense not recorded		76,700
Write-off of deferred arrangement fees and unamortized discount and debt issuance costs		23,700
Aggregate principal balance							$ 2,000,000
Accrued interest	44,900
Pre-tax gain on extinguishment of debt	1,100,000
Senior Notes [Member] | Common Stock [Member]
Debt Instrument [Line Items]
Aggregate principal balance	2,000,000
Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Borrowings outstanding						$ 950,000
Prepetition Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, term			5 years
Borrowings outstanding					$ 442,000		$ 436,000
Write-off of deferred arrangement fees and unamortized discount and debt issuance costs		3,900
Post-petition interest unpaid		$ 21,300
Claims settled in cash	279,600
Aggregate amount of rollover debt	$ 200,000
Prepetition Revolving Credit Facility [Member] | Financial Letter of Credit [Member]
Debt Instrument [Line Items]
Borrowings outstanding					$ 6,000