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v3.10.0.1

Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2018 | Mar. 31, 2018 | Feb. 28, 2014 | Dec. 31, 2018
2.00% Convertible Senior Notes Due 2019 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument interest rate |  |  | 2.00% | 2.00%
Debt instrument maturity date |  |  | Aug. 15, 2019 | Aug. 15, 2019
2.625% Convertible Senior Notes Due 2024 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument interest rate |  | 2.625% |  | 2.625%
Debt instrument maturity date |  | Mar. 15, 2024 |  | Mar. 15, 2024
7.250% Senior Notes Due 2026 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument interest rate | 7.25% |  |  | 7.25%
Debt instrument maturity date | Aug. 15, 2026 |  |  | Aug. 15, 2026

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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=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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