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v3.19.1

Long-Term Debt and Short-Term Borrowings - Schedule of Long-Term Debt (Parenthetical) (Detail) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Senior secured term loans [Member] |  |
Debt Instrument [Line Items] |  |
Maturity date of debt, end | Dec. 31, 2024 | Dec. 31, 2024
Senior secured term loans [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 0.75% | 0.75%
Senior secured term loans [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 3.49% | 3.49%
4.875% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 4.875% | 4.875%
Due date of long-term debt | 2026 | 2026
5.25% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 5.25% | 5.25%
Due date of long-term debt | 2025 | 2025

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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 Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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