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Derivative Financial Instruments - Additional Information (Details) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) item | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2018 EUR (€) item
Derivative [Line Items] |  |  |  |
Number of interest rate swaps | item | 2 |  |  | 2
Foreign currency unrealized loss expected to be reclassified into earnings over next twelve months | $ (5,000,000) |  |  |
Foreign currency unrealized gains expected to be reclassified into earnings over next twelve months, tax | 1,500,000 |  |  |
3.95% senior unsecured notes due 2027 |  |  |  |
Derivative [Line Items] |  |  |  |
Proceeds from issue of senior notes in settlement of derivatives | $ 10,000,000 |  |  |
Interest Rate Swap Agreements |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative fixed interest rate (as a percent) | 0.51% |  |  | 0.51%
Carrying value / fair value of derivative liabilities included in other liabilities | $ 500,000 | $ 400,000 |  |
Interest Rate Swap Agreements | U.S. dollars |  |  |  |
Derivative [Line Items] |  |  |  |
Variable Rate Basis | LIBOR |  |  |
Interest Rate Swap Agreements | EUR |  |  |  |
Derivative [Line Items] |  |  |  |
Variable Rate Basis | EURIBOR |  |  |
Swaps maturing September 2019 |  |  |  |
Derivative [Line Items] |  |  |  |
Average fixed interest rate (as a percent) | 1.09% |  |  | 1.09%
Interest Rate Swap Final Maturity Period One |  |  |  |
Derivative [Line Items] |  |  |  |
Final maturity date of swap amortization | Jun. 30, 2023 |  |  |
Interest Rate Swap Final Maturity Period Two |  |  |  |
Derivative [Line Items] |  |  |  |
Final maturity date of swap amortization | Jun. 30, 2024 |  |  |
Treasury Lock | Interest Lock Agreement | 3.95% senior unsecured notes due 2027 |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of reduction in effective interest rate on senior notes | 0.25% |  |  |
Foreign Currency Forward Exchange Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Number of credit contingency features | item | 0 |  |  |
Foreign Currency Forward Exchange Contracts | Cash Flow Hedging |  |  |  |
Derivative [Line Items] |  |  |  |
Gains (losses) in other comprehensive income, effective portion | $ (25,800,000) | 34,600,000 | $ (32,200,000) |
Commodity Swap Agreements |  |  |  |
Derivative [Line Items] |  |  |  |
Carrying value / fair value of derivative liabilities included in other liabilities | 2,500,000 |  |  |
Notional amount | 16,600,000 |  |  |
Designated as Hedging Instrument | Interest Rate Swap Agreements |  |  |  |
Derivative [Line Items] |  |  |  |
Floating rate obligation | 50,000,000 |  |  | € 52.9
Carrying value / fair value of derivative assets included in other assets | 600,000 | 800,000 |  |
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Carrying value / fair value of derivative assets included in other assets | 1,300,000 | 14,700,000 |  |
Carrying value / fair value of derivative liabilities included in other liabilities | 15,300,000 | 2,800,000 |  |
Notional amount | 416,500,000 | 285,400,000 |  |
Gains (losses) in other comprehensive income, effective portion | (20,100,000) | 25,600,000 | (25,300,000) |
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts | Cash Flow Hedging |  |  |  |
Derivative [Line Items] |  |  |  |
Net gain (loss) recognized in gross margin |  | (11,300,000) | (19,400,000) |
Not Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Carrying value / fair value of derivative assets included in other assets | 300,000 |  |  |
Carrying value / fair value of derivative liabilities included in other liabilities | 100,000 |  |  |
Foreign exchange net gains (losses) on derivative contracts not designated as hedges | $ (4,300,000) | $ 17,100,000 | $ (900,000) |

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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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