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		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ 33.7	$ (1.6)	$ 25.7	$ (36.3)
Less: net income (loss) attributable to continuing operations noncontrolling interest	(1.5)	(0.2)	(1.2)	(1.0)
Net income (loss) from continuing operations attributable to Company common shareholders	35.2	(1.4)	26.9	(35.3)
Net income (loss) from discontinued operations, net of tax	(5.4)	(6.8)	(1.8)	(13.0)
Less: net income (loss) attributable to discontinued operations noncontrolling interest	0.0	(1.3)	0.0	(3.3)
Net income (loss) from discontinued operations attributable to Company common shareholders	(5.4)	(5.5)	(1.8)	(9.7)
Net income (loss) attributable to Company common shareholders	$ 29.8	$ (6.9)	$ 25.1	$ (45.0)
Weighted average shares outstanding for basic EPS computation	49.6	48.9	49.5	48.8
Earnings (loss) from continuing operations attributable to Company common shareholders per common share – basic	$ 0.71	$ (0.03)	$ 0.54	$ (0.72)
Earnings (loss) from discontinued operations attributable to Company common shareholders per common share – basic	(0.11)	(0.11)	(0.03)	(0.20)
Earnings (loss) per common share-basic (per share)	$ 0.60	$ (0.14)	$ 0.51	$ (0.92)
Weighted average shares outstanding including nonvested shares	49.6	48.9	49.5	48.8
Dilutive effect of stock options and restricted stock units	2.5	0.0	2.5	0.0
Weighted average shares outstanding for diluted EPS computation	52.1	48.9	52.0	48.8
Earnings (loss) from continuing operations attributable to Company common shareholders per common share – assuming dilution	$ 0.68	$ (0.03)	$ 0.52	$ (0.72)
Earnings (loss) from discontinued operations attributable to Company common shareholders per common share – assuming dilution	(0.11)	(0.11)	(0.03)	(0.20)
Earnings (loss) per common share - assuming dilution (per share)	$ 0.57	$ (0.14)	$ 0.48	$ (0.92)