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Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 28, 2013 | Dec. 28, 2013 Senior subordinated notes [Member] | Dec. 28, 2013 Senior subordinated notes [Member] Portion at Fair Value, Fair Value Disclosure [Member] | Sep. 28, 2013 Senior subordinated notes [Member] Portion at Fair Value, Fair Value Disclosure [Member] | Dec. 29, 2012 Senior subordinated notes [Member] Portion at Fair Value, Fair Value Disclosure [Member] | Dec. 28, 2013 Senior subordinated notes [Member] Carrying (Reported) Amount, Fair Value Disclosure [Member] | Sep. 28, 2013 Senior subordinated notes [Member] Carrying (Reported) Amount, Fair Value Disclosure [Member] | Dec. 29, 2012 Senior subordinated notes [Member] Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Senior subordinated notes due date | Mar. 01, 2018 |  |  |  |  |  |  |
Obligation to pay principle on the Company Senior Subordinates Notes |  | $ 450 |  |  |  |  |  |
Senior subordinated notes, percentage |  | 8.25% |  |  |  |  |  |
Senior subordinated notes due 2018 |  |  | 434.3 | 449.5 | 481.5 |  |  |
Carrying value of senior subordinated notes |  |  |  |  |  | $ 449.4 | $ 449.4 | $ 449.3

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of notes payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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