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v3.10.0.1

Long-Term Debt - Schedule of Redemption Prices expressed as Percentages of Principal Amount (Detail) - Senior Notes Due 2026 [Member] | 1 Months Ended | 12 Months Ended
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Aug. 31, 2018 | Dec. 31, 2018
Debt Instrument Redemption [Line Items] |  |
Redemption prices, expressed as percentages of principal amount | 100.00% |
2021 [Member] |  |
Debt Instrument Redemption [Line Items] |  |
Redemption prices, expressed as percentages of principal amount |  | 103.625%
2022 [Member] |  |
Debt Instrument Redemption [Line Items] |  |
Redemption prices, expressed as percentages of principal amount |  | 101.813%
2023 and Thereafter [Member] |  |
Debt Instrument Redemption [Line Items] |  |
Redemption prices, expressed as percentages of principal amount |  | 100.00%

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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 Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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