Restructuring and Transaction Related Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 20	$ 26	$ 111	$ 36
Business Combination, Acquisition Related Costs	$ 1	3	$ 3	19
Mekonomen [Member]
Restructuring Cost and Reserve [Line Items]
Equity Method Investment, Ownership Percentage	26.60%		26.60%
2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 14	0	$ 84	0
Restructuring and Related Cost, Cost Incurred to Date	84		84
2024 Global Restructuring | Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	10	0	13	0
2024 Global Restructuring | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4	0	4	0
2024 Global Restructuring | Inventory Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	0	14	0
2024 Global Restructuring | Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	0	46	0
2024 Global Restructuring | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	0	7	0
2024 Global Restructuring | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	120		120
2024 Global Restructuring | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	100		100
2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	6	3	13
Restructuring and Related Cost, Expected Cost	30		30
Restructuring and Related Cost, Cost Incurred to Date	28		28
2022 Global Restructuring | Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	1	1	3
2022 Global Restructuring | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	2	2	5
2022 Global Restructuring | Inventory Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	2	0	2
2022 Global Restructuring | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	1	0	3
1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	0	4	1
Restructuring and Related Cost, Cost Incurred to Date	14		14
1 LKQ Europe Program [Member] | Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	0	2	1
1 LKQ Europe Program [Member] | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	0	1	0
1 LKQ Europe Program [Member] | Inventory Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	1	0	1	0
1 LKQ Europe Program [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	40		40
1 LKQ Europe Program [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	30		30
Acquisition integration plans
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4	20	20	22
Restructuring and Related Cost, Expected Cost Remaining	2		2
Acquisition integration plans | Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	20	4	20
Acquisition integration plans | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4	0	13	2
Acquisition integration plans | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	$ 0	3	$ 0
Wholesale - North America Segment | 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	12		12
Wholesale - North America Segment | 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	2		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		0
Europe | 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	72		72
Europe | 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	19		19
Europe | 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	14		14
Specialty [Member] | 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0		0
Specialty [Member] | 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	4		4
Specialty [Member] | 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0		0
Self Service Segment | 2024 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0		0
Self Service Segment | 2022 Global Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	3		3
Self Service Segment | 1 LKQ Europe Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	$ 0		$ 0