Cover Page - shares	6 Months Ended
	Jun. 30, 2024	Aug. 07, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-31262
Entity Registrant Name	ASBURY AUTOMOTIVE GROUP, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	01-0609375
Entity Address, Address Line One	2905 Premiere Parkway NW,
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Duluth
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30097
City Area Code	770
Local Phone Number	418-8200
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	ABG
Security Exchange Name	NYSE
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 Common Stock, Shares Outstanding		19,980,100
Entity Central Index Key	0001144980
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false