| Document and Entity Information | Jul. 18, 2023 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | Ares Acquisition Corp II |
| Amendment Flag | false |
| Entity Central Index Key | 0001853138 |
| Document Type | 8-K |
| Document Period End Date | Jul. 18, 2023 |
| Entity Incorporation State Country Code | E9 |
| Entity File Number | 001-41691 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Units Each Consisting Of One Class A Ordinary Share 00001 Par Value And One Half Of One Redeemable Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 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 Included As Part Of The Units [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Ordinary Shares |
| Trading Symbol | AACT |
| 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 1150 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 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 |
