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Restructuring and Acquisition Related Expenses - Additional Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring Cost and Reserve
Restructuring and acquisition related expenses	$ 6,488,000lkq_RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts	$ 3,321,000lkq_RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts
Acquisition-related expenses
Restructuring Cost and Reserve
Restructuring and acquisition related expenses	500,000lkq_RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts / us-gaap_RestructuringCostAndReserveAxis = lkq_AcquisitionRelatedExpensesMember	200,000lkq_RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts / us-gaap_RestructuringCostAndReserveAxis = lkq_AcquisitionRelatedExpensesMember
Restructuring expenses
Restructuring Cost and Reserve
Restructuring and acquisition related expenses	6,000,000lkq_RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts / us-gaap_RestructuringCostAndReserveAxis = lkq_RestructuringExpensesMember	3,100,000lkq_RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts / us-gaap_RestructuringCostAndReserveAxis = lkq_RestructuringExpensesMember
Restructuring expenses | Maximum
Restructuring Cost and Reserve
Expected additional charges	$ (5,000,000)us-gaap_EffectOnFutureEarningsAmount / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringCostAndReserveAxis = lkq_RestructuringExpensesMember

X

- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations. Additionally, this element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

No definition available.

+ Details

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- Definition

The quantified amount of the future effect on earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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