Restructuring and Transaction Related Expenses (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 36	$ 8
Business Combination, Acquisition Related Costs	2	10
2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	27	0
Restructuring and Related Cost, Cost Incurred to Date	27
2024 Global Restructuring \| Inventory Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	8	0
2024 Global Restructuring \| Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	17	0
2024 Global Restructuring \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	2	0
2024 Global Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	75
2024 Global Restructuring \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	55
2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	5
Restructuring and Related Cost, Cost Incurred to Date	26
2022 Global Restructuring \| Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	2
2022 Global Restructuring \| Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	2
2022 Global Restructuring \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	1
2022 Global Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	35
2022 Global Restructuring \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	28
1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	2	1
Restructuring and Related Cost, Cost Incurred to Date	12
1 LKQ Europe Program [Member] \| Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	1
1 LKQ Europe Program [Member] \| Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	0
1 LKQ Europe Program [Member] \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	40
1 LKQ Europe Program [Member] \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	30
Acquisition integration plans
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	6	2
Acquisition integration plans \| Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	0
Acquisition integration plans \| Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4	2
Acquisition integration plans \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	$ 0
Acquisition integration plans \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	15
Acquisition integration plans \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	5
Wholesale - North America Segment \| 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0
Wholesale - North America Segment \| 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	2
Wholesale - North America Segment \| 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0
Europe \| 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	27
Europe \| 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	17
Europe \| 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	12
Specialty [Member] \| 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0
Specialty [Member] \| 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	4
Specialty [Member] \| 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0
Self Service Segment \| 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0
Self Service Segment \| 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	3
Self Service Segment \| 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	$ 0

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.

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- Definition

Amount of costs incurred to date for the specified restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

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Amount of expected cost remaining for the specified restructuring cost.

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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