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Debt - Schedule of Company's Long-Term Debt (Parenthetical) (Detail) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 EUR (€) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CAD ($) | Sep. 25, 2017 EUR (€) | Dec. 31, 2016
Three Point Six Two Five Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Senior Notes, face amount |  | $ 750,000,000 |  |  |
Senior Notes, due year | 2024 |  |  |  |
Interest rate | 3.625% | 3.625% | 3.625% |  |
Four Point One Five Zero Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Senior Notes, face amount |  | $ 650,000,000 |  |  |
Senior Notes, due year | 2025 |  |  |  |
Interest rate | 4.15% | 4.15% | 4.15% |  |
One Point Nine Zero Zero Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Senior Notes, face amount | € | € 550,000,000 |  |  |  |
Senior Notes, due year | 2023 |  |  |  |
Interest rate | 1.90% | 1.90% | 1.90% |  |
One Point Five Zero Zero Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Senior Notes, face amount | € | € 600,000,000 |  |  | € 600,000,000 |
Senior Notes, due year | 2027 |  |  |  |
Interest rate | 1.50% | 1.50% | 1.50% | 1.50% |
Three Point One Zero Zero Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Senior Notes, face amount |  |  | $ 425,000,000 |  |
Senior Notes, due year | 2022 |  |  |  |
Interest rate | 3.10% | 3.10% | 3.10% |  |
Bank Term Debt [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average interest rate of bank term debt | 5.68% | 5.68% | 5.68% |  | 7.30%
Government Loans [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average interest rate of bank term debt | 1.73% | 1.73% | 1.73% |  | 2.53%

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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