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Supplemental Guarantor Condensed Consolidating Financial Statements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended | 12 Months Ended | 1 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended
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Sep. 28, 2013 | Sep. 29, 2012 | Sep. 28, 2013 | Sep. 29, 2012 | Mar. 26, 2010 7.875% Senior Notes due 2018 | Sep. 28, 2013 7.875% Senior Notes due 2018 | Dec. 31, 2012 7.875% Senior Notes due 2018 | Mar. 26, 2010 8.125% Senior Notes due 2020 | Sep. 28, 2013 8.125% Senior Notes due 2020 | Dec. 31, 2012 8.125% Senior Notes due 2020 | Sep. 28, 2013 4.75% Senior Notes due 2023
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, aggregate principal amount |  |  |  |  |  | $ 280 |  |  | $ 280 |  | $ 500
Long-term debt, stated coupon rate |  |  |  |  |  | 7.875% | 7.875% |  | 8.125% | 8.125% | 4.75%
Long-term debt, maturity date |  |  |  |  | Mar. 15, 2018 | Mar. 15, 2018 | Mar. 15, 2018 | Mar. 15, 2020 | Mar. 15, 2020 | Mar. 15, 2020 | Jan. 15, 2023
Selling, general and administrative expenses allocated from Lear | $ 31.7 | $ 23.7 | $ 93.3 | $ 73.2 |  |  |  |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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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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