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Other Expense (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Other Income and Expenses [Abstract] |  |
Severance and post-employment benefits | $ 2.0 | $ 0.0
Asset-related charges | 0.1 | 0.0
Other charges | 1.2 | 0.0
Total restructuring and related charges | 3.3 | 0.0
Development and licensing income | (0.2) | (0.4)
Contingent consideration | 0.3 | 0.3
Other items | (0.3) | 1.0
Total other expense | $ 3.1 | $ 0.9

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