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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets [Table Text Block] | Intangible asset balances are as follows (in millions):
| December 31, 2022 |  | December 31, 2021
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount
Sales order book | $ | 54.6 |  |  | $ | 39.9 |  |  | $ | 14.7 |  |  | $ | 54.6 |  |  | $ | 35.5 |  |  | $ | 19.1 |
Customer relationships | 68.9 |  |  | 37.9 |  |  | 31.0 |  |  | 68.9 |  |  | 33.3 |  |  | 35.6 |
Total | $ | 123.5 |  |  | $ | 77.8 |  |  | $ | 45.7 |  |  | $ | 123.5 |  |  | $ | 68.8 |  |  | $ | 54.7 |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] | The amount of amortization expense for intangible assets in each of the succeeding years is estimated to be as follows (in millions):
2023 | $ | 6.3 |
2024 | 9.4 |
2025 | 8.9 |
2026 | 7.3 |
2027 | 5.9 |
Thereafter | 7.9 |
Total | $ | 45.7 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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