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Condensed Consolidated Statements of Cash Flows (Parenthetical) $ in Millions | 3 Months Ended
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Mar. 28, 2015 USD ($)
Statement of Cash Flows [Abstract] |
Cash restricted for use - acquisition of Eagle Ottawa | $ 350.0
Cash restricted for use - repurchase of senior notes | 250.0
Cash paid in conjunction with Eagle Ottawa acquisition to settle pre-existing accounts payable | $ 45.7

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- Definition Cash Paid to Settle Existing Accounts Payable from Business Combination, Included in Increase (Decrease) in Accounts Payable + References No definition available. + Details
Name: | lea_CashPaidtoSettleExistingAccountsPayablefromBusinessCombinationIncludedinIncreaseDecreaseinAccountsPayable
Namespace Prefix: | lea_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Restricted Cash Disbursements for Repayments of Senior Debt + References No definition available. + Details
Name: | lea_RestrictedCashDisbursementsforRepaymentsofSeniorDebt
Namespace Prefix: | lea_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Restricted Cash Disbursements to Acquire Business + References No definition available. + Details
Name: | lea_RestrictedCashDisbursementstoAcquireBusiness
Namespace Prefix: | lea_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration