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Debt (Details) - EUR (€) | Jun. 22, 2018 | Jun. 18, 2018
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Debt Instrument [Line Items] |  |
Proceeds from debt | € 495,700,000 |
Senior Notes | Notes Due June 2026 - 1.750% |  |
Debt Instrument [Line Items] |  |
Principal amount | € 500,000,000 |
Interest rate | 1.75% |
Debt instrument, discount percentage | 99.564% |
Effective rate | 1.809% |
Senior Notes | Notes due June 2018 |  |
Debt Instrument [Line Items] |  |
Principal amount | € 350,000,000 |
Revolving Credit Facility | Amended Agreement |  |
Debt Instrument [Line Items] |  |
Credit agreement term |  | 5 years

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