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Business Segments (Details4) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 909.9 | $ 869.1 | $ 880.2 | $ 865.9 | $ 796.1 | $ 770.5 | $ 810.5 | $ 757.5 | $ 3,525.1 | $ 3,134.6 | $ 3,719.6
Identifiable Assets | $ 5,185.4 |  |  |  | $ 5,170.0 |  |  |  | $ 5,185.4 | $ 5,170.0 | $ 5,751.7
Percent of total | 100.00% |  |  |  | 100.00% |  |  |  | 100.00% | 100.00% | 100.00%
United States [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Identifiable Assets | $ 4,547.7 |  |  |  | $ 4,591.5 |  |  |  | $ 4,547.7 | $ 4,591.5 | $ 5,073.1
Percent of total | 88.00% |  |  |  | 89.00% |  |  |  | 88.00% | 89.00% | 88.00%
China [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Identifiable Assets | $ 276.0 |  |  |  | $ 249.3 |  |  |  | $ 276.0 | $ 249.3 | $ 260.0
Percent of total | 5.00% |  |  |  | 5.00% |  |  |  | 5.00% | 5.00% | 5.00%
United Kingdom [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Identifiable Assets | $ 122.7 |  |  |  | $ 122.8 |  |  |  | $ 122.7 | $ 122.8 | $ 154.3
Percent of total | 2.00% |  |  |  | 2.00% |  |  |  | 2.00% | 2.00% | 3.00%
Other [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Identifiable Assets | $ 239.0 |  |  |  | $ 206.4 |  |  |  | $ 239.0 | $ 206.4 | $ 264.3
Percent of total | 5.00% |  |  |  | 4.00% |  |  |  | 5.00% | 4.00% | 4.00%
External Sales [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 3,525.1 | $ 3,134.6 | $ 3,719.6
Percent of total |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
External Sales [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 2,070.6 | $ 1,857.5 | $ 2,142.6
Percent of total |  |  |  |  |  |  |  |  | 59.00% | 59.00% | 58.00%
External Sales [Member] | China [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 265.6 | $ 214.1 | $ 246.9
Percent of total |  |  |  |  |  |  |  |  | 7.00% | 7.00% | 7.00%
External Sales [Member] | United Kingdom [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 231.6 | $ 183.8 | $ 198.2
Percent of total |  |  |  |  |  |  |  |  | 6.00% | 6.00% | 5.00%
External Sales [Member] | Germany [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 217.1 | $ 177.7 | $ 193.3
Percent of total |  |  |  |  |  |  |  |  | 6.00% | 6.00% | 5.00%
External Sales [Member] | France [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 165.6 | $ 142.6 | $ 153.3
Percent of total |  |  |  |  |  |  |  |  | 5.00% | 4.00% | 4.00%
External Sales [Member] | Japan [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 131.7 | $ 151.9 | $ 202.3
Percent of total |  |  |  |  |  |  |  |  | 4.00% | 5.00% | 5.00%
External Sales [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 99.8 | $ 97.6 | $ 154.5
Percent of total |  |  |  |  |  |  |  |  | 3.00% | 3.00% | 4.00%
External Sales [Member] | Mexico [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 96.1 | $ 89.7 | $ 78.4
Percent of total |  |  |  |  |  |  |  |  | 3.00% | 3.00% | 2.00%
External Sales [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 247.0 | $ 219.7 | $ 350.1
Percent of total |  |  |  |  |  |  |  |  | 7.00% | 7.00% | 10.00%

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