v2.4.0.8

Significant Unobservable Inputs Used in Fair Value Measurements (Details) (Contingent Consideration Liabilities, Fair Value, Inputs, Level 3) | Sep. 30, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Contingent Consideration Liabilities | Fair Value, Inputs, Level 3 |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation |  |  |
Weighted Average, Probability of achieving payout targets | 71.70% | 79.70% | 78.10%
Weighted Average, Discount rate | 6.50% | 6.60% | 3.00%

X
- Definition The weighted average Interest rate used to find the present value of an amount to be paid in the future as an input to measure fair value. + References No definition available. + Details
Name: | lkq_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWeightedAverageDiscountRate
Namespace Prefix: | lkq_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average measure of the probability of achieving the payout target specified in the contingent consideration agreement, which is used as an input to measure fair value. + References No definition available. + Details
Name: | lkq_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityWeightedAverageProbabilityPayoutTargets
Namespace Prefix: | lkq_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration