Net Fair Value of Interest Rate Swaps (Detail) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Liabilities	$ (0.9)	$ (3.4)
Net Fair Value	(0.9)	(3.4)
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	(0.9)	(2.6)
Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Liabilities		(0.8)
Level 1
Derivatives, Fair Value [Line Items]
Liabilities
Net Fair Value
Level 1 | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities
Level 1 | Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Liabilities
Level 2
Derivatives, Fair Value [Line Items]
Liabilities	(0.9)	(3.4)
Net Fair Value	(0.9)	(3.4)
Level 2 | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	(0.9)	(2.6)
Level 2 | Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Liabilities		(0.8)
Level 3
Derivatives, Fair Value [Line Items]
Liabilities
Net Fair Value
Level 3 | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities
Level 3 | Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Liabilities