Income Taxes - Components of Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jun. 24, 2012	Mar. 25, 2012	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic									$ (39.4)	$ (120.3)	$ (20.7)
Foreign									7.5	5.8	(0.9)
Loss from continuing operations before income taxes									(31.9)	(114.5)	(21.6)
Federal income taxes:
Current									(1.7)	0	(1.5)
Deferred									0.3	(3.5)	0.6
Total Federal									(1.4)	(3.5)	(0.9)
State and local income taxes
Current									2.0	0.8	3.1
Deferred									(0.7)	0.4	0.8
Total State and local									1.3	1.2	3.9
Foreign income taxes:
Current									0.1	0.1	0.4
Deferred									0	0.6	(1.5)
Total Foreign									0.1	0.7	(1.1)
Total	$ (2.9)	$ 0.2	$ (0.1)	$ 2.8	$ (5.4)	$ 1.3	$ 6.6	$ (4.1)	$ 0	$ (1.6)	$ 1.9