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Other Expense Restructuring and Related Charges (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Payments to Acquire Property, Plant, and Equipment | $ 104.7 | $ 130.8 | $ 170.2
Severance charges | 3.1 | 0.0 | 8.9
Other restructuring charges | 3.8 | 0.0 | 0.2
Restructuring Reserve [Roll Forward] |  |  |
Balance, December 31, 2017 | 2.1 |  |
Charges | 9.1 | 0.0 | 26.4
Non-cash asset write-downs | (2.2) | (0.7) | (17.5)
Balance, December 31, 2018 | 3.3 | 2.1 |
Severance and benefits [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance, December 31, 2017 | 0.0 |  |
Charges | 3.1 |  |
Cash payments | (0.8) |  |
Non-cash asset write-downs | 0.0 |  |
Balance, December 31, 2018 | 2.3 | 0.0 |
Asset-related charges [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance, December 31, 2017 | 0.0 |  |
Charges | 2.2 |  |
Cash payments | 0.0 |  |
Non-cash asset write-downs | (2.2) |  |
Balance, December 31, 2018 | 0.0 | 0.0 |
Other charges [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance, December 31, 2017 | 0.0 |  |
Charges | 3.5 |  |
Cash payments | 0.0 |  |
Non-cash asset write-downs | (3.5) |  |
Balance, December 31, 2018 | 0.0 | 0.0 |
2018 Restructuring Plan [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 8.8 |  |
Severance charges | 3.1 |  |
Asset impairment charges, patent and equipment | 2.2 |  |
Other restructuring charges | 3.5 |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance, December 31, 2017 | 0.0 |  |
Charges | 8.8 |  |
Cash payments | (0.8) |  |
Non-cash asset write-downs | (5.7) |  |
Balance, December 31, 2018 | 2.3 | $ 0.0 |
2016 Restructuring Plan [Member] [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 0.3 |  |
Asset impairment charges, patent and equipment |  |  | $ 4.5
Restructuring Reserve [Roll Forward] |  |  |
Balance, December 31, 2018 | 1.0 |  |
Minimum [Member] | 2018 Restructuring Plan [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Expected Cost | 8.0 |  |
Payments to Acquire Property, Plant, and Equipment | 9.0 |  |
Maximum [Member] | 2018 Restructuring Plan [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Expected Cost | 13.0 |  |
Payments to Acquire Property, Plant, and Equipment | $ 14.0 |  |

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