Earnings (Loss) Per Common Share (Reconciliation Of The Numerator And Denominator Of Earnings (Loss) Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Earnings Per Share [Abstract]
Net income (loss) attributable to Company common shareholders	$ (14.3)	$ (29.0)	$ 10.8	$ (74.0)
Net income (loss) for EPS computations	$ (14.3)	$ (29.0)	$ 10.8	$ (74.0)
Weighted average shares outstanding for basic EPS computation	49.6	48.9	49.5	48.9
Earnings (loss) per common share attributable to Company common shareholders – basic (per share)	$ (0.29)	$ (0.59)	$ 0.22	$ (1.51)
Weighted average shares outstanding including nonvested shares	49.6	48.9	49.5	48.9
Dilutive effect of stock options and restricted stock units	0.0	0.0	2.2	0.0
Weighted average shares outstanding for diluted EPS computation	49.6	48.9	51.7	48.9
Earnings (loss) per common share attributable to Company common shareholders – assuming dilution (per share)	$ (0.29)	$ (0.59)	$ 0.21	$ (1.51)