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Divestitures - Narrative (Details) - USD ($) $ in Millions		1 Months Ended		12 Months Ended
Divestitures - Narrative (Details) - USD ($) $ in Millions	Dec. 07, 2015	Jan. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Discontinued operations
Sale price of discontinued operations					$ 1.1	$ 78.2
Proceeds from dispositions				$ 0.0	1.1	$ 78.2
Current assets held for sale			$ 6.8	$ 0.0	6.8
Shanghai Business
Discontinued operations
Sale price of discontinued operations		$ 1.1
Proceeds from dispositions			1.1
Current assets held for sale			2.3		2.3
Current liabilities held for sale			$ 0.7		$ 0.7
Kysor Panel Systems
Discontinued operations
Sale price of discontinued operations	$ 85.0
Proceeds from dispositions	78.2
Gain on sale of business	$ 9.9