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Debt - Schedule of Debt and Capital Lease Obligations (Details) - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |
Current portion of Euro term loan | $ 9.3 | $ 4.3
Current portion of debt | 9.3 | 4.3
Non-current portion of Euro term loan | 52.3 | 63.3
Long-term debt | 930.1 | 805.6
Other debt | 0.1 | 0.1
Total debt | 939.4 | 809.9
Senior unsecured credit facility - due 2021 |  |
Debt Instrument [Line Items] |  |
Long-term debt | 185.0 | 50.0
4.7% senior notes due 2025 |  |
Debt Instrument [Line Items] |  |
Senior notes | 300.0 | 300.0
3.95% senior notes due 2027 |  |
Debt Instrument [Line Items] |  |
Senior notes | 400.0 | 400.0
4.7% senior notes due 2025 and 3.95% senior notes due 2027 |  |
Debt Instrument [Line Items] |  |
Senior notes original issue discount | (2.1) | (2.3)
Senior notes deferred financing costs | $ (5.2) | $ (5.5)

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