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Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block] | Intangible asset balances are as follows (in millions):
| June 30, 2019 |  | December 31, 2018
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount
Sales order book | $ | 54.6 |  |  | $ | 28.0 |  |  | $ | 26.6 |  |  | $ | 54.6 |  |  | $ | 28.0 |  |  | $ | 26.6 |
Customer relationships | 68.9 |  |  | 21.8 |  |  | 47.1 |  |  | 68.9 |  |  | 19.5 |  |  | 49.4 |
Total | $ | 123.5 |  |  | $ | 49.8 |  |  | $ | 73.7 |  |  | $ | 123.5 |  |  | $ | 47.5 |  |  | $ | 76.0 |

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- Definition Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block] + References No definition available. + Details
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- References No definition available. + Details
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