Chapter 11 Proceedings - Summary of Liabilities Subject to Compromise (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt subject to compromise:
Accrued interest	$ 44,877	$ 47,636
Total liabilities subject to compromise	2,044,877	2,618,805
Borrowings under RCF		436,000
Lease liabilities		112,646
Accounts payable		16,725
Other accrued liabilities		1,302
Other liabilities		4,496
3.45% Senior Notes due 2023 [Member]
Debt subject to compromise:
Senior Notes	250,000	250,000
7.875% Senior Notes due 2025 [Member]
Debt subject to compromise:
Senior Notes	500,000	500,000
5.70% Senior Notes due 2039 [Member]
Debt subject to compromise:
Senior Notes	500,000	500,000
4.875% Senior Notes due 2043 [Member]
Debt subject to compromise:
Senior Notes	$ 750,000	$ 750,000

The amount of accounts payable included in liabilities subject to compromise.

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The amount of lease liabilities included in liabilities subject to compromise.

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The amount of accrued liabilities included in liabilities subject to compromise.

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Face (par) amount of debt instrument at time of issuance.

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Total amount of liabilities subject to compromise.

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The amount of debt and related accrued interest included in liabilities subject to compromise.

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The amount of other obligations included in liabilities subject to compromise.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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