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Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

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):


			December 31, 2020																		December 31, 2019
			Gross Carrying Amount						Accumulated Amortization						Net Amount						Gross Carrying Amount						Accumulated Amortization						Net Amount
Sales order book			$	54.6					$	32.0					$	22.6					$	54.6					$	29.9					$	24.7
Customer relationships			68.9						28.7						40.2						68.9						24.1						44.8
Total			$	123.5					$	60.7					$	62.8					$	123.5					$	54.0					$	69.5