Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Reconciliation of Pretax Profit (Loss) of Discontinued Operations to After-Tax Profit or Loss of Discontinued Operations [Abstract]
Net loss from discontinued operations	$ (16.2)	$ (6.8)
NATG [Member]
Reconciliation of Pretax Profit (Loss) of Discontinued Operations to After-Tax Profit or Loss of Discontinued Operations [Abstract]
Net sales	12.1	273.7
Cost of sales	12.3	252.5
Gross profit (loss)	(0.2)	21.2
Selling, general & administrative expenses	7.9	28.6
Special charges	7.9	0.0
Operating loss from discontinued operations	(16.0)	(7.4)
Foreign currency exchange (gain) loss	0.5	(0.8)
Interest and other income, net	(0.3)	0.0
Loss from discontinued operations before income taxes	(16.2)	(6.6)
Provision for income taxes	0.0	0.2
Net loss from discontinued operations	$ (16.2)	$ (6.8)