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Joint Ventures (Tables) | 12 Months Ended
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Dec. 31, 2017
Joint Ventures [Abstract] |
Condensed Balance Sheet [Table Text Block] | Below is summarized balance sheet information as of December 31, 2017 and 2016, and statement of operations information of the China joint ventures for the years ended December 31, 2017, 2016 and 2015 ($ in millions):
| December 31,
| 2017 |  | 2016
Current assets | $ | 112.4 |  |  | $ | 118.6 |
Noncurrent assets | 205.3 |  |  | 201.7 |
Current liabilities | 64.8 |  |  | 69.6 |
Long-term liabilities | 114.7 |  |  | 122.0 |
Stockholder's equity | 138.2 |  |  | 128.7 |
Condensed Income Statement [Table Text Block] | Summary financial results of joint ventures were as follows ($ in millions):
| For the Years Ended December 31,
| 2017 |  | 2016 |  | 2015
Net sales | $ | 105.0 |  |  | $ | 107.5 |  |  | $ | 122.0 |
Gross profit | 28.8 |  |  | 36.5 |  |  | 42.7 |
Net income | 4.9 |  |  | 9.5 |  |  | 13.2 |

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- Definition Tabular disclosure of condensed income statement, including, but not limited to, income statements of consolidated entities and consolidation eliminations. + References No definition available. + Details
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