Debt - Components of Debt (Detail) (USD $) In Millions, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012	Nov. 13, 2009
Debt Instrument [Line Items]
Total debt	$ 605.4	$ 605.8
Current maturities	2.0	1.9
Long-term debt before discount	603.4	603.9
Total long-term debt	601.4	601.8
8.375% Senior Notes Due in 2017 [Member]
Debt Instrument [Line Items]
Total debt	215.0	215.0
Less discount on 8.375% senior notes	(2.0)	(2.1)	(3.1)
8.125% Senior Notes Due in 2018 [Member]
Debt Instrument [Line Items]
Total debt	375.0	375.0
GE Obligation [Member]
Debt Instrument [Line Items]
Total debt	9.7	9.9
Current maturities	0.9	0.9
Other Capital Leases [Member]
Debt Instrument [Line Items]
Total debt	4.4	4.6
Current maturities	0.8	0.8
Other Debt [Member]
Debt Instrument [Line Items]
Total debt	1.3	1.3
Current maturities	$ 0.3	$ 0.2