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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
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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 |  |  |  |  |  |  |

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- Definition Debt Instrument, Effective Interest Rate, Percentage after Interest Rate Swap + References No definition available. + Details
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- Definition Average fixed interest rate that will be received or paid upon exercise of a group of interest rate swaption contracts. + References No definition available. + Details
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- Definition Date the entity entered into the derivative contract, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Description of where the interest rate derivatives designated as cash flow hedges are reported in the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(7)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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