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Derivative Financial Instruments - Additional Information (Details) € in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) item | Jun. 30, 2018 USD ($) | Jun. 30, 2019 EUR (€) | Dec. 31, 2018 USD ($) | Dec. 31, 2017
Derivative [Line Items] |  |  |  |  |  |  |
Foreign currency unrealized losses expected to be reclassified into earnings over next twelve months | $ (8,700,000) |  | $ (8,700,000) |  |  |  |
Foreign currency unrealized gains expected to be reclassified into earnings over next twelve months, tax | $ 3,000,000.0 |  | $ 3,000,000.0 |  |  |  |
3.95% senior unsecured notes due 2027 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Debt instrument, interest rate | 3.95% |  | 3.95% |  | 3.95% |  | 3.95%
Interest Rate Swap Agreements |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative fixed interest rate (as a percent) | 0.52% |  | 0.52% |  | 0.52% |  |
Carrying value / fair value of derivative liabilities included in other liabilities | $ 800,000 |  | $ 800,000 |  |  | $ 500,000 |
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% |  | 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 | $ 5,200,000 | $ 20,900,000 | $ 8,800,000 | $ 12,500,000 |  |  |
Commodity Swap Agreements |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Carrying value / fair value of derivative liabilities included in other liabilities | 4,700,000 |  | 4,700,000 |  |  |  |
Notional amount | 20,600,000 |  | 20,600,000 |  |  |  |
Designated as Hedging Instrument | Interest Rate Swap Agreements |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Floating rate obligation | 50,000,000.0 |  | 50,000,000.0 |  | € 44.9 |  |
Carrying value / fair value of derivative assets included in other assets | 100,000 |  | 100,000 |  |  | 600,000 |
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Carrying value / fair value of derivative assets included in other assets | 400,000 |  | 400,000 |  |  | 1,300,000 |
Carrying value / fair value of derivative liabilities included in other liabilities | 18,700,000 |  | 18,700,000 |  |  | 15,300,000 |
Notional amount | 412,100,000 |  | 412,100,000 |  |  | 416,500,000 |
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts | Other Noncurrent Liabilities |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Carrying value / fair value of derivative liabilities included in other liabilities | 6,700,000 |  | 6,700,000 |  |  |  |
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts | Cash Flow Hedging |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Net gain (loss) recognized in gross margin | (2,800,000) | 1,100,000 | (4,600,000) | 3,400,000 |  |  |
Not Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Carrying value / fair value of derivative assets included in other assets | 100,000 |  | 100,000 |  |  | $ 300,000 |
Carrying value / fair value of derivative liabilities included in other liabilities | 100,000 |  | 100,000 |  |  |  |
Foreign exchange net gains (losses) on derivative contracts not designated as hedges | $ 900,000 | $ 6,000,000.0 | $ 600,000 | $ 4,000,000.0 |  |  |

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