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Other Expense Items (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($) | Feb. 17, 2016 | Dec. 31, 2015 | Jun. 30, 2013 USD ($)
Summary of Investment Holdings [Line Items] |  |  |  |  |  |  |
Venezuela currency devaluation | $ 0.0 | $ 0.0 | $ 0.0 | $ 2.7 |  |  |
Venezuela deconsolidation | (11.1) | 0.0 | (11.1) | 0.0 |  |  |
Development income | (0.4) | $ (0.4) | (0.8) | $ (0.8) |  |  |
Nonrefundable payment from customer | 13.6 |  | 13.6 |  |  |  | $ 20.0
Unearned income, current | 1.5 |  | 1.5 |  |  |  |
Unearned income, noncurrent | $ 12.1 |  | $ 12.1 |  |  |  |
VENEZUELA |  |  |  |  |  |  |
Summary of Investment Holdings [Line Items] |  |  |  |  |  |  |
Foreign Currency Exchange Rate, Remeasurement |  |  |  |  | 10.0 | 6.3 |

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