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Revenue Recognition Movement in Standard Product Warranty Accrual (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Product Warranty Liability [Line Items] |  |  |
Revenue, Variable Consideration Reserve | $ 108,000 | $ 103,000 |
Deferred Service-Type Warranty Revenue | 27,067 | 24,006 | $ 19,465
Deferred Revenue, Additions | 43,381 | 38,736 |
Deferred Revenue, Revenue Recognized | $ 40,320 | $ 34,195 |
Minimum |  |  |
Product Warranty Liability [Line Items] |  |  |
Standard Product Warranty Period | 6 months |  |
Maximum [Member] |  |  |
Product Warranty Liability [Line Items] |  |  |
Standard Product Warranty Period | 36 months |  |

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- Definition Deferred Service-Type Revenue, Additions + References No definition available. + Details
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Namespace Prefix: | lkq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Deferred Service-Type Revenue, Revenue Recognized + References No definition available. + Details
Name: | lkq_DeferredServiceTypeRevenueRecognized
Namespace Prefix: | lkq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Deferred Service-Type Warranty Revenue + References No definition available. + Details
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Namespace Prefix: | lkq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Revenue, Variable Consideration Constraint Reserve - Estimate of variable consideration with probability of subsequent revenue. + References No definition available. + Details
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- Definition Standard Product Warranty Period - Describes the duration term of the product warranty. + References No definition available. + Details
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Namespace Prefix: | lkq_
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Balance Type: | na
Period Type: | duration

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- 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |