Acquisition - Components of Identified Intangible Assets and Estimated Weighted Average Useful Lives with Cliffstar Acquisition (Detail) (Cliffstar [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 01, 2011
Business Acquisition [Line Items]
Estimated Fair Market Value	$ 223.5
Customer Relationships [Member]
Business Acquisition [Line Items]
Estimated Fair Market Value	216.9
Estimated Useful Life	15 years
Non-Competition Agreements [Member]
Business Acquisition [Line Items]
Estimated Fair Market Value	$ 6.6
Estimated Useful Life	3 years