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Schedule of Long-Term Obligations (Parenthetical) (Details)	Mar. 31, 2015	Dec. 31, 2014
Notes Payable
Debt Instrument
Weighted average interest rate	1.00%us-gaap_DebtWeightedAverageInterestRate / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember	1.00%us-gaap_DebtWeightedAverageInterestRate / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember
Other Long-Term Debt
Debt Instrument
Weighted average interest rate	3.50%us-gaap_DebtWeightedAverageInterestRate / us-gaap_LongtermDebtTypeAxis = lkq_OtherLongTermDebtMember	3.10%us-gaap_DebtWeightedAverageInterestRate / us-gaap_LongtermDebtTypeAxis = lkq_OtherLongTermDebtMember

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X

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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X

- Details

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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: