XML 98 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 21, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 000-50404    
Entity Registrant Name LKQ CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 36-4215970    
Entity Address, Address Line One 500 West Madison Street,    
Entity Address, Address Line Two Suite 2800,    
Entity Address, City or Town Chicago,    
Entity Address, State or Province IL    
Entity Address, Postal Zip Code 60661    
City Area Code 312    
Local Phone Number 621-1950    
Title of 12(b) Security Common Stock, par value $.01 per share    
Trading Symbol LKQ    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 8.2
Entity Common Stock, Shares Outstanding   307,148,085  
Entity Central Index Key 0001065696    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Amendment Flag false