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Pre-Production Costs Related to Long-Term Supply Agreements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 28, 2014 | Jun. 29, 2013
Preproduction Costs Related To Long Term Supply Arrangements [Abstract] |  |
Capitalized pre-production E&D costs | $ 103.6 | $ 98.6
Capitalized pre-production tooling costs related to customer-owned tools | 91.5 | 101.7
Cash collected related to E&D and tooling costs | $ 202.6 | $ 198.3

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- Definition Amount of recoverable preproduction engineering and design costs related to long term supply agreements capitalized during the reporting period. + References No definition available. + Details
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- Definition Amount of recoverable preproduction tooling costs related to long term supply agreements capitalized during the reporting period. + References No definition available. + Details
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Namespace Prefix: | lea_
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- Definition Cash recoveries of preproduction engineering, design and tooling costs incurred on behalf of a customer. + References No definition available. + Details
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- Details
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