Interest Expense - Schedule of Interest Expense (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Interest Expense [Line Items]
Interest on long-term debt	$ 49.4	$ 50.1	$ 31.6
Other interest expense	4.8	7.0	5.3
Total	$ 54.2	$ 57.1	$ 36.9