Derivatives and Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		1 Months Ended					9 Months Ended		12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Apr. 30, 2011 Interest Rate Swap	Dec. 31, 2011 August 2007 Interest Rate Swap Agreement	Oct. 01, 2011 August 2007 Interest Rate Swap Agreement	Aug. 31, 2007 August 2007 Interest Rate Swap Agreement	Sep. 30, 2005 September 2005 Interest Rate Swap Agreement	Sep. 29, 2012 September 2005 Interest Rate Swap Agreement	Oct. 01, 2011 September 2005 Interest Rate Swap Agreement	Dec. 31, 2011 September 2005 Interest Rate Swap Agreement
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amount of interest rate swap agreement					$ 400			$ 105	$ 100
Effective date of the fixed rate swap								Aug. 30, 2007	Apr. 25, 2006
Fixed interest rate paid								4.89%	4.68%
Swap agreement expiration								2012-05	2013-07
Effective fixed rate paid on debt								5.39%	5.28%
Fair value of the swap						1.7	2.9			3.6	7.6	6.3
Location of the swap on the Consolidated Balance Sheets	Derivative gains and losses included in AOCI		Derivative gains and losses included in AOCI			AOCI	AOCI			Other non-current liabilities	Other non-current liabilities	Other non-current liabilities
Interest rate spread over LIBOR								0.50%	0.60%
Incremental expense resulting from interest rate swaps	1.0	2.3	4.9	7.0
Fair value measurement inputs classified as Level 2			Our interest rate swaps are carried at fair value measured on a recurring basis. Fair values are determined through the use of models that consider various assumptions, including time value, yield curves, as well as other relevant economic measures, which are inputs that are classified as Level 2 in the valuation hierarchy defined by the accounting guidance.
Average swap interest rate					3.65%
Cost of expiration (termination)					$ 11.0
Derivative instrument contractual life					10 years