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Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block]



	June 30, 2018												December 31, 2017

									(in millions)
	Gross Carrying Amount				Accumulated Amortization				Net Amount				Gross Carrying Amount				Accumulated Amortization				Net Amount
Sales order book	$	54.6			$	26.4			$	28.2			$	54.6			$	25.9			$	28.7
Customer relationships	68.9				17.2				51.7				68.9				14.9				54.0
Total	$	123.5			$	43.6			$	79.9			$	123.5			$	40.8			$	82.7