Earnings 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								12 Months Ended
		Dec. 31, 2015	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income (loss) from continuing operations		$ (51.7)	$ (36.2)	$ (1.6)	$ (34.7)	$ (186.7)	$ (110.0)	$ (13.7)	$ (262.4)	$ (124.2)	$ (572.8)	$ (35.7)
Less: Net income (loss) attributable to continuing operations noncontrolling interest										(10.7)	(0.1)	0.8
Less: preferred stock dividends										0.0	0.0	0.3
Net income (loss) from continuing operations attributable to Company common shareholders										(113.5)	(572.7)	(36.8)
Net income (loss) from discontinued operations, net of tax		(3.0)	4.4	(6.8)	(6.2)	24.6	(8.8)	(9.0)	(77.0)	(11.6)	(70.2)	25.6
Less: Net income attributable to discontinued operations noncontrolling interest										(3.2)	(15.3)	6.9
Net income (loss) from discontinued operations attributable to Company common shareholders										(8.4)	(54.9)	18.7
Net income (loss) attributable to Company common shareholders		$ (47.9)	$ (29.0)	$ (6.9)	$ (38.1)	$ (163.2)	$ (124.2)	$ (24.8)	$ (315.4)	(121.9)	(627.6)	(18.1)
Less: Net income allocated to participating securities	[1]									0.0	0.0	0.1
Net income (loss) for basic EPS computations	[2]									$ (121.9)	$ (627.6)	$ (18.2)
Weighted average shares outstanding for basic EPS computation										48.9	48.8	49.4
Earnings (loss) from continuing operations attributable to Company common shareholders per common share – basic		$ (0.91)	$ (0.69)	$ (0.03)	$ (0.69)	$ (3.83)	$ (2.34)	$ (0.28)	$ (5.26)	$ (2.32)	$ (11.74)	$ (0.75)
Earnings (loss) from discontinued operations attributable to Company common shareholders per common share – basic		(0.07)	0.10	(0.11)	(0.09)	0.48	(0.21)	(0.23)	(1.16)	(0.17)	(1.12)	0.38
Earnings (loss) per common share - basic (usd per share)		(0.98)	(0.59)	(0.14)	(0.78)	(3.35)	(2.55)	(0.51)	(6.42)	$ (2.49)	$ (12.86)	$ (0.37)
Weighted average shares outstanding for diluted EPS computation										48.9	48.8	49.4
Earnings (loss) from continuing operations attributable to Company common shareholders per common share – assuming dilution		(0.91)	(0.69)	(0.03)	(0.69)	(3.83)	(2.34)	(0.28)	(5.26)	$ (2.32)	$ (11.74)	$ (0.75)
Earnings (loss) from discontinued operations attributable to Company common shareholders per common share – assuming dilution		(0.07)	0.10	(0.11)	(0.09)	0.48	(0.21)	(0.23)	(1.16)	(0.17)	(1.12)	0.38
Earnings (loss) per common share attributable to Company common shareholders – assuming dilution		$ (0.98)	$ (0.59)	$ (0.14)	$ (0.78)	$ (3.35)	$ (2.55)	$ (0.51)	$ (6.42)	$ (2.49)	$ (12.86)	$ (0.37)

[1] Outstanding unvested share-based payment awards that contain rights to non-forfeitable dividends are considered participating securities in undistributed earnings in the calculation above.

[2] Numerator