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Fair Value Measurements (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Senior Unsecured Credit Agreement - Revolving Credit Facilities
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Long-term Line of Credit	$ 1,164	$ 1,414
Senior Unsecured Term Loan Credit Agreement (CAD Note)
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Term loan payable	$ 487	$ 529

X

- Definition

Borrowings Under Amendment No. 3 to the Fourth Amended and Restated Credit Agreement including both term loan and revolving credit

+ References

No definition available.

+ Details

Name:	lkq_BorrowingsUnderCreditFacility
Namespace Prefix:	lkq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

[Line Items] for Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table]

+ References

No definition available.

+ Details

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Namespace Prefix:	lkq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

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

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- Details

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