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Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2022
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, 2022 |  | December 31, 2021
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount
Sales order book | $ | 54.6 |  |  | $ | 38.3 |  |  | $ | 16.3 |  |  | $ | 54.6 |  |  | $ | 35.5 |  |  | $ | 19.1 |
Customer relationships | 68.9 |  |  | 35.6 |  |  | 33.3 |  |  | 68.9 |  |  | 33.3 |  |  | 35.6 |
Total | $ | 123.5 |  |  | $ | 73.9 |  |  | $ | 49.6 |  |  | $ | 123.5 |  |  | $ | 68.8 |  |  | $ | 54.7 |

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