Reconciliation Of Segment EBITDA To Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reconciliation of Segment Earnings Before Interest Taxes Depreciation And Amortization to Net Income Table [Line Items]
Loss on debt extinguishment	$ 12,751	$ 0
Net income	145,979	99,063
Less: net income attributable to continuing noncontrolling interest	740	1,015
Less: net income attributable to discontinued noncontrolling interest	(103)	0
Net income attributable to LKQ stockholders	145,136	98,048
Net income from discontinued operations	915	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	146,154	98,048
Depreciation and amortization	65,495	71,002
Cost, Depreciation	5,085	5,205
Depreciation and Amortization - Restructuring Expenses	799	0
Interest expense, net of interest income	25,931	36,089
Provision for income taxes	60,411	51,550
EBITDA	316,626	261,894
Equity in (losses) earnings of unconsolidated subsidiaries	516	(39,549)
Restructuring Charges And Business Combination Acquisition Related Costs net of Restructuring Depreciation	6,171	3,307
Restructuring and acquisition related expenses	6,970	3,307
CostofGoodsSoldRestructuringCharges	(4)	0
(Gain On Disposal Of Business) And Impairment Of Net Assets Held for Sale	(249)	15,023
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(96)	120
Segment EBITDA	$ 321,932	$ 319,893