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Debt - Additional Information (Detail) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jun. 30, 2018 EUR (€) | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |
Deferred gain (loss) on net investment hedge recorded in AOCI, net of tax | $ | $ 10.1 |  |
3.75% Senior Notes Due 2021 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, face amount | € |  | € 300,000,000 |
Senior notes rate |  | 3.75% | 3.75%

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 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 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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- Details
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