Acquisition And Restructuring Integration Plans [Abstract]

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- Definition

Acquisition Related Expenses [Abstract]

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

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- Definition

Amount of expected cost remaining for the specified restructuring cost.

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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Restructuring and Acquisition Related Expenses - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Acquisition Related Expenses [Abstract]
Business Combination, Acquisition Related Costs	$ 2	$ 18	$ 15
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs	18	14	5
Stahlgruber [Member]
Acquisition Related Expenses [Abstract]
Business Combination, Acquisition Related Costs			4
Andrew Page
Acquisition Related Expenses [Abstract]
Business Combination, Acquisition Related Costs			$ 5
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs	14	10
Maximum [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Expected future restructuring expenses	(5)
Specialty
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs		$ 3
1 LKQ Europe Program [Member] \| Minimum [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Expected future restructuring expenses	(45)
1 LKQ Europe Program [Member] \| Maximum [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Expected future restructuring expenses	(55)
2019 Global Restructuring Program [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs	37
2019 Global Restructuring Program [Member] \| Minimum [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Expected future restructuring expenses	(5)
2019 Global Restructuring Program [Member] \| Maximum [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Expected future restructuring expenses	(10)
Cost of Sales [Member] \| Andrew Page
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs	4
Cost of Sales [Member] \| 2019 Global Restructuring Program [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs	17
Restructuring Charges And Business Combination Acquisition Related Costs [Member] \| 2019 Global Restructuring Program [Member]
Acquisition And Restructuring Integration Plans [Abstract]
Restructuring Costs	$ 20