Cover - USD ($)	12 Months Ended
	Dec. 31, 2023	Feb. 23, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-41691
Entity Registrant Name	ARES ACQUISITION CORPORATION II
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	98-1592112
Entity Address, Address Line One	245 Park Avenue
Entity Address, Address 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	310
Local Phone Number	201-4100
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
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
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	true
Entity Public Float			$ 508,000,000
Entity Central Index Key	0001853138
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false
Units, each consisting of one Class A Ordinary Share, $0.0001 par value, and one-half of one redeemable warrant
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share, $0.0001 par value, and one-half of one redeemable warrant
Trading Symbol	AACT.U
Security Exchange Name	NYSE
Class A Ordinary Shares
Document Information [Line Items]
Title of 12(b) Security	Class A Ordinary Shares
Trading Symbol	AACT
Security Exchange Name	NYSE
Redeemable warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50
Trading Symbol	AACT WS
Security Exchange Name	NYSE
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		50,000,000
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		12,500,000