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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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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

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

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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.

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Restructuring and Acquisition Related Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Business Combination, Acquisition Related Costs	$ 3
1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		$ (5)
1 LKQ Europe Program [Member] \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	50
1 LKQ Europe Program [Member] \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	40
Global Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		(3)
Restructuring Reserve	12		$ 14
Gain (Loss) on Disposition of Property Plant Equipment		$ 3
Global Restructuring Programs \| Operating Lease, Liability
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	8		$ 9
Global Restructuring Programs \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	115
Global Restructuring Programs \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	105
Specialty [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	5
Specialty [Member] \| Global Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2
Restructuring and Related Cost, Cost Incurred to Date	2
Europe \| Global Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	63
Restructuring and Related Cost, Cost Incurred to Date	58
Self Service Segment \| Global Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2
Restructuring and Related Cost, Cost Incurred to Date	2
Wholesale - North America Segment \| Global Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	44
Restructuring and Related Cost, Cost Incurred to Date	$ 43