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Investments in Affiliates and Other Related Party Transactions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 TS Lear Automotive Sdn Bhd. (Malaysia) | Mar. 31, 2011 TS Lear Automotive Sdn Bhd. (Malaysia) | Mar. 30, 2013 International Automotive Components Group North America, LLC | Dec. 31, 2012 International Automotive Components Group North America, LLC | Dec. 31, 2011 International Automotive Components Group North America, LLC
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Investment in Affiliates | $ 172.0 | $ 177.8 |  |  |  |  |
Due From Affiliates | 74.2 | 45.4 |  |  |  |  |
Due to Affiliates | 8.8 | 22.7 |  |  |  |  |
Percentage of ownership interest sold |  |  |  |  | 22.88% |  |
Proceeds from sale of equity investments |  |  |  |  | $ 49.6 |  |
Equity method investment ownership interest acquired |  |  |  | 44.00% |  |  |
Equity method investment ownership interest |  |  | 90.00% |  |  | 23.00% | 23.00%

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