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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument carrying amount	$ 2,071,307	$ 1,642,445
Unamortized debt discount/premium and debt issuance costs	(16,174)	(18,205)
Long-term debt and capital lease obligation	2,055,133	1,624,240
Less: current maturities of long-term debt and lease obligations	11,316	27,335
Long-term debt, net of current maturities	2,043,817	1,596,905
2026 Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument carrying amount	611,000	75,000
2027 Notes
Debt Instrument [Line Items]
Debt instrument carrying amount	695,000	777,500
2030 Notes
Debt Instrument [Line Items]
Debt instrument carrying amount	550,000	550,000
Other Finance Obligations
Debt Instrument [Line Items]
Debt instrument carrying amount	208,772	216,072
Finance Lease Obligations
Debt Instrument [Line Items]
Debt instrument carrying amount	$ 6,535	$ 23,873

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(2)
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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, including portion classified as current.

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