Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2026	Aug. 10, 2026
Document Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2026
Document Fiscal Year Focus	2026
Document Transition Report	false
Entity File Number	001-43375
Entity Registrant Name	Ares Acquisition Corp III
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	98-1929025
Entity Address, Address Line One	245 Park Avenue
Entity Address, Adress Line Two	44th Floor
Entity Address, City or Town	New York
Entity Address State Or Province	NY
Entity Address, Postal Zip Code	10167
City Area Code	212
Local Phone Number	710-2100
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	true
Entity Central Index Key	0002128115
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Amendment Flag	false
Inception Date	Mar. 25, 2026
Units, each consisting of one Class A Ordinary Share, $0.0001 par value, and one-tenth of one redeemable warrant
Document Information
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share, $0.0001 par value, and one-tenth of one redeemable warrant
Trading Symbol	AAC.U
Security Exchange Name	NYSE
Class A Ordinary Shares included as part of the units
Document Information
Title of 12(b) Security	Class A Ordinary Shares included as part of the units
Trading Symbol	AAC
Security Exchange Name	NYSE
Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50
Document Information
Title of 12(b) Security	Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50
Trading Symbol	AAC WS
Security Exchange Name	NYSE
Class A ordinary shares
Document Information
Entity Common Stock, Shares Outstanding		39,500,000
Class B ordinary shares
Document Information
Entity Common Stock, Shares Outstanding		9,918,750