Chapter 11 Proceedings - Additional Information (Detail) - USD ($)			4 Months Ended	8 Months Ended		12 Months Ended
	Apr. 23, 2021	Jan. 22, 2021	Apr. 23, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 22, 2021	Mar. 31, 2021
Liabilities Subject To Compromise [Line Items]
Reorganization, date plan confirmed						Apr. 08, 2021
Reorganization, effective date of plan						Apr. 23, 2021
Line of credit					$ 436,000,000		$ 436,000,000
Authorizing issuance of shares of common stock representing equity interests percentage	100.00%		100.00%
Total capital stock authorized	800,000,000		800,000,000
Common stock, shares authorized	750,000,000		750,000,000	750,000,000	500,000,000	750,000,000	500,000,000
Common stock, par value	$ 0.0001		$ 0.0001	$ 0.0001	$ 0.01	$ 0.0001	$ 0.01
Preferred stock, shares authorized	50,000,000		50,000,000	50,000,000	25,000,000	50,000,000	25,000,000
Preferred stock, par value	$ 0.0001		$ 0.0001	$ 0.0001	$ 0.01	$ 0.0001	$ 0.01
Common stock transferred	30,000,000.0
New-money commitments to Debtors	$ 114,700,000
New stock warrants issued in exchange for common stock	7,500,000
Common stock, shares issued	100,000,000.0		100,000,000.0	100,075,000	145,264,000	100,075,000	145,264,000
Common stock, shares outstanding	100,000,000.0		100,000,000.0	100,075,000	138,054,000	100,075,000	138,054,000
Warrants term	5 years		5 years
Common stock shares registration									22,892,773
Senior notes					$ 2,000,000,000		$ 2,000,000,000
Payment for professional fees and vendor cancellation costs			$ 37,566,000	$ 36,154,000			40,301,000
Accrued interest				2,986,000		$ 2,986,000
Interest expense			34,827,000	26,180,000			42,585,000	$ 122,832,000
Liabilities subject to compromise					2,618,805,000		2,618,805,000
Net loss			(1,961,989,000)	(177,344,000)			(1,254,904,000)	$ (357,214,000)
Asset Impairment Charges			197,027,000	132,449,000			842,016,000
Contractual interest expense not recorded			$ 35,390,000				98,027,000
Computershare Inc. [Member]
Liabilities Subject To Compromise [Line Items]
Warrants issued	7,500,000
Warrants term	5 years		5 years
Warrants exercise years	5 years
Warrants exercisable percentage	7.00%
Warrants exercise price	$ 29.22		$ 29.22
Senior Notes [Member]
Liabilities Subject To Compromise [Line Items]
Common stock transferred	70,000,000.0
Pro rata share received percentage	70.00%
Liabilities subject to compromise principal balance	$ 2,000,000,000.0		$ 2,000,000,000.0
Liabilities subject to compromise accrued interest	44,900,000		44,900,000
Contractual interest expense not recorded							$ 76,700,000
Senior Secured Term Loan Credit Agreement [Member]
Liabilities Subject To Compromise [Line Items]
Senior notes	$ 100,000,000.0		100,000,000.0
Debt instrument maturity date	Apr. 22, 2027
Debt instrument carrying amount	$ 100,000,000.0		100,000,000.0
Additional First Lien Notes [Member]
Liabilities Subject To Compromise [Line Items]
Senior notes	39,700,000		39,700,000
Debt instrument carrying amount				0		0
Exit Revolving Credit Facility [Member]
Liabilities Subject To Compromise [Line Items]
Line of credit		$ 950,000,000.0
Exit Revolving Credit Facility [Member] | Maximum [Member]
Liabilities Subject To Compromise [Line Items]
Credit facility pro rata share amount of funded loans	100,000,000
Senior Secured Revolving Credit Facility [Member]
Liabilities Subject To Compromise [Line Items]
Amount available for general purposes	400,000,000.0		400,000,000.0
Sublimit for issuance of letters of credit	$ 100,000,000.0		100,000,000.0
Credit Facility [Member]
Liabilities Subject To Compromise [Line Items]
Accrued interest										$ 35,300,000
Interest expense					$ 23,400,000
First Lien Notes [Member]
Liabilities Subject To Compromise [Line Items]
Senior notes maturity year	2027
Senior notes	$ 85,300,000		$ 85,300,000
Debt instrument maturity date	Apr. 22, 2027
First Lien Notes [Member] | Cash Pay Rate [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes	9.00%		9.00%
First Lien Notes [Member] | Cash Pay Rate and Payment in Kind Rate [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes	11.00%		11.00%
First Lien Notes [Member] | Payment in Kind Rate [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes	13.00%		13.00%
5.70% Senior Notes due 2039 [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes		5.70%			5.70%		5.70%
Senior notes maturity year		2039
Senior notes					$ 500,000,000		$ 500,000,000
3.45% Senior Notes due 2023 [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes		3.45%			3.45%		3.45%
Senior notes maturity year		2023
Senior notes					$ 250,000,000		$ 250,000,000
4.875% Senior Notes due 2043 [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes		4.875%			4.875%		4.875%
Senior notes maturity year		2043
Senior notes					$ 750,000,000		$ 750,000,000
7.875% Senior Notes due 2025 [Member]
Liabilities Subject To Compromise [Line Items]
Interest rate of senior notes		7.875%			7.875%		7.875%
Senior notes maturity year		2025
Senior notes					$ 500,000,000		$ 500,000,000
Exit Term Loan Credit Facility [Member]
Liabilities Subject To Compromise [Line Items]
Line of credit				$ 100,000,000.0		$ 100,000,000.0
Senior notes	$ 100,000,000.0		$ 100,000,000.0
Maximum portion of facility used to settle RCF claims	$ 200,000,000