XML 63 R49.htm IDEA: XBRL DOCUMENT
v3.19.1

Pre-Production Costs Related to Long-Term Supply Agreements - Classification of Recoverable Customer E&D and Tooling Costs Related to Long-term Supply Agreements (Details) - USD ($) $ in Millions | Mar. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Pre Production Costs Related to Long Term Supply Arrangements [Line Items] |  |
Recoverable customer E&D and tooling | $ 255.3 | $ 241.3
Current |  |
Pre Production Costs Related to Long Term Supply Arrangements [Line Items] |  |
Recoverable customer E&D and tooling | 174.6 | 160.9
Long-term |  |
Pre Production Costs Related to Long Term Supply Arrangements [Line Items] |  |
Recoverable customer E&D and tooling | $ 80.7 | $ 80.4

X
- Definition Pre Production Costs Related to Long Term Supply Arrangements [Line Items] + References No definition available. + Details
Name: | lear_PreProductionCostsRelatedToLongTermSupplyArrangementsLineItems
Namespace Prefix: | lear_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount as of the balance sheet date of capitalized preproduction costs incurred on long-term supply arrangements, including recoverable costs to design and develop products. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6387057&loc=d3e6169-108318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6387057&loc=d3e6233-108318 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section S99 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27011391&loc=d3e105117-122735 + Details
Name: | us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |