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
	Oct. 02, 2015	Sep. 26, 2014	Oct. 02, 2015	Sep. 26, 2014
Earnings Per Share [Abstract]
Net income (loss) from continuing operations	$ (36.2)	$ (110.0)	$ (72.5)	$ (386.1)
Less: net income (loss) attributable to continuing operations noncontrolling interest	(2.4)	4.0	(3.4)	0.0
Net income (loss) from continuing operations attributable to Company common shareholders	(33.8)	(114.0)	(69.1)	(386.1)
Net income (loss) from discontinued operations, net of taxes	4.4	(8.8)	(8.6)	(94.8)
Less: net income (loss) attributable to discontinued operations noncontrolling interest	(0.4)	1.4	(3.7)	(16.5)
Net income (loss) from discontinued operations attributable to Company common shareholders	4.8	(10.2)	(4.9)	(78.3)
Net income (loss) attributable to Company common shareholders	$ (29.0)	$ (124.2)	$ (74.0)	$ (464.4)
Weighted average shares outstanding for basic EPS computation	48.9	48.7	48.9	48.8
Earnings (loss) per common share-basic, from continuing operations (per share)	$ (0.69)	$ (2.34)	$ (1.41)	$ (7.91)
Earnings (loss) from discontinued operations attributable to Company common shareholders per common share – basic	0.10	(0.21)	(0.10)	(1.61)
Earnings (loss) per common share-basic (per share)	$ (0.59)	$ (2.55)	$ (1.51)	$ (9.52)
Weighted average shares outstanding including nonvested shares	48.9	48.7	48.9	48.8
Weighted average shares outstanding for diluted EPS computation	48.9	48.7	48.9	48.8
Earnings (loss) from continuing operations attributable to Company common shareholders per common share – assuming dilution	$ (0.69)	$ (2.34)	$ (1.41)	$ (7.91)
Earnings (loss) from discontinued operations attributable to Company common shareholders per common share – assuming dilution	0.10	(0.21)	(0.10)	(1.61)
Earnings (loss) per common share - assuming dilution (per share)	$ (0.59)	$ (2.55)	$ (1.51)	$ (9.52)