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v2.4.1.9

Debt - Redemption Prices (Detail) | 0 Months Ended | 12 Months Ended
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Aug. 24, 2012 | Dec. 31, 2014
8.125% Senior Notes due 2020 |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price | 1.03%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyMember |
4.75% Senior Notes due 2023 | Debt instrument redemption period one |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 102.375%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyThreeMember
4.75% Senior Notes due 2023 | Debt instrument redemption period two |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 101.583%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyThreeMember
4.75% Senior Notes due 2023 | Debt instrument redemption period three |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 100.792%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodThreeMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyThreeMember
4.75% Senior Notes due 2023 | Debt instrument redemption period four and thereafter |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodFourMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyThreeMember
5.375% Senior Notes due 2024 | Debt instrument redemption period one |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 102.688%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFourMember
5.375% Senior Notes due 2024 | Debt instrument redemption period two |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 101.792%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFourMember
5.375% Senior Notes due 2024 | Debt instrument redemption period three |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 100.896%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodThreeMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFourMember
5.375% Senior Notes due 2024 | Debt instrument redemption period four and thereafter |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodFourMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFourMember
5.25% Senior Notes due 2025 | Debt instrument redemption period one |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 102.625%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFiveMember
5.25% Senior Notes due 2025 | Debt instrument redemption period two |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 101.75%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFiveMember
5.25% Senior Notes due 2025 | Debt instrument redemption period three |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 100.875%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodThreeMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFiveMember
5.25% Senior Notes due 2025 | Debt instrument redemption period four and thereafter |  |
Debt Instrument [Line Items] |  |
Percentage of debt redemption price |  | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = us-gaap_DebtInstrumentRedemptionPeriodFourMember / us-gaap_LongtermDebtTypeAxis = lea_SeniorNotesDueTwoThousandTwentyFiveMember

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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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