XML 97 R76.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Pension and Other Postretirement Benefit Plans - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) agreement pension_plan age | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Services completed by employees for eligibility, retiring age | age | 55 |  |
Accumulated benefit obligation | $ 1,034.7 | $ 973.7 |
Tax benefit (expense) related to defined benefit plans recognized in other comprehensive income (loss) | $ (1.5) | (7.1) | $ (8.3)
Number of multi-employer pension plans | pension_plan | 2 |  |
Number of collective bargaining agreements | agreement | 3 |  |
Defined contribution expense | $ 15.0 | 14.4 | 13.3
Defined contribution retirement program |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined contribution expense | $ 21.3 | $ 21.2 | 19.4
Unionized employees | Multi-employer plan total contributions |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Concentration risk percentage (more than) | 5.00% | 5.00% |
April 24, 2020 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Number of collective bargaining agreements | agreement | 1 |  |
July 3, 2020 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Number of collective bargaining agreements | agreement | 2 |  |
Pension |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension settlement and curtailment loss | $ 1.7 |  |
Pension | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Period for amortizing actuarial losses | 5 years |  |
Estimated minimum required contributions to pension plans in next fiscal year | $ 10.0 |  |
Pension | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Period for amortizing actuarial losses | 31 years |  |
Estimated minimum required contributions to pension plans in next fiscal year | $ 15.0 |  |
Pension | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Lump-Sum Payout settlement payments | 0.0 | $ 154.9 |
Lump-Sum Payout settlement charge |  | 34.2 |
Curtailment gain (loss) | $ 0.0 | 0.0 | 0.0
Pension | United States | Equity securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 50.00% |  |
Pension | United States | Equity securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 75.00% |  |
Pension | United States | Debt securities, mutual funds | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 15.00% |  |
Pension | United States | Debt securities, mutual funds | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 40.00% |  |
Pension | United States | Alternative investments | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 0.00% |  |
Pension | United States | Alternative investments | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 30.00% |  |
Pension | United States | Cash and other | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 0.00% |  |
Pension | United States | Cash and other | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 10.00% |  |
Pension | Foreign |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Lump-Sum Payout settlement payments | $ 0.0 | 0.0 |
Curtailment gain (loss) | $ (0.9) | 0.0 | $ (7.7)
Pension | Foreign | Equity securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 45.00% |  |
Pension | Foreign | Equity securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 65.00% |  |
Pension | Foreign | Debt securities, mutual funds | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 25.00% |  |
Pension | Foreign | Debt securities, mutual funds | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 45.00% |  |
Pension | Foreign | Alternative investments | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 0.00% |  |
Pension | Foreign | Alternative investments | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 25.00% |  |
Pension | Foreign | Cash and other | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 0.00% |  |
Pension | Foreign | Cash and other | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target percentage of asset allocation | 15.00% |  |
Other Postretirement | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Period for amortizing actuarial losses | 3 years |  |
Other Postretirement | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Period for amortizing actuarial losses | 17 years |  |
Other Postretirement | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Lump-Sum Payout settlement payments | $ 0.0 | 0.0 |
Other Postretirement | Foreign |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Lump-Sum Payout settlement payments | $ 0.0 | $ 0.0 |

X
- Definition Defined Benefit Plan, Amortization of Actuarial Losses, Amortization Period + References No definition available. + Details
Name: | lea_DefinedBenefitPlanAmortizationofActuarialLossesAmortizationPeriod
Namespace Prefix: | lea_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements, Lump-Sum Payout Offer + References No definition available. + Details
Name: | lea_DefinedBenefitPlanRecognizedNetGainLossDuetoSettlementsLumpSumPayoutOffer
Namespace Prefix: | lea_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The minimum age for an employee to retire to be covered by the continuation of medical benefits under the postretirement benefit plan. + References No definition available. + Details
Name: | lea_EmployeesRetirementAge
Namespace Prefix: | lea_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Multiemployer Plans, Collective-Bargaining Arrangement, Number of Agreements + References No definition available. + Details
Name: | lea_MultiemployerPlansCollectiveBargainingArrangementNumberOfAgreements
Namespace Prefix: | lea_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Multiemployer Plans, Number of Plans + References No definition available. + Details
Name: | lea_MultiemployerPlansNumberofPlans
Namespace Prefix: | lea_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(ii) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(01) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(8) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanSettlementsPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569643-111683 + Details
Name: | us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=lea_DefinedContributionRetirementPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_UnionizedEmployeesConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=lea_MultiemployerPlansPlanContributionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollectiveBargainingArrangementAxis=lea_MultiemployerPlanCollectiveBargainingArrangementExpirationDateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollectiveBargainingArrangementAxis=lea_MultiemployerPlanCollectiveBargainingArrangementExpirationDateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=lea_AlternativeInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |