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Long-term Debt - Long-term Debt (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Aug. 03, 2018
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Principal | $ 2,769,400 |  |
Debt issuance costs, net of amortization | (34,403) | $ (25,693) |
Long-term Debt | 2,517,149 | 2,500,132 |
Bank credit facility |  |  |
Debt Instrument [Line Items] |  |  |
Principal | 500,000 | 1,250,000 |
7½% Senior Notes Due 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Principal | 619,400 | 625,000 |
Discount, net of amortization | (145,672) | (169,232) |
9¾% Senior Notes Due 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Principal | 1,650,000 | 850,000 |
Discount, net of amortization | $ (72,176) | $ (29,943) |
Interest rate on debt instrument | 9.00% |  | 9.75%

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- Definition Long term debt principal amount. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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