| Cover | May 05, 2023 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 05, 2023 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-40018 |
| Entity Registrant Name | Apollo Strategic Growth Capital II |
| Entity Central Index Key | 0001838337 |
| Entity Tax Identification Number | 98-0598286 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 9 West 57th Street |
| Entity Address, Address Line Two | 42nd Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10019 |
| City Area Code | 212 |
| Local Phone Number | 515-3200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one Class A ordinary share, $0.00025 par value, and one-fifth of one warrant | |
| Title of 12(b) Security | Units, each consisting of one Class A ordinary share, $0.00025 par value, and one-fifth of one warrant |
| Trading Symbol | APGB.U |
| Security Exchange Name | NYSE |
| Class A ordinary shares | |
| Title of 12(b) Security | Class A ordinary shares |
| Trading Symbol | APGB |
| Security Exchange Name | NYSE |
| Warrants | |
| Title of 12(b) Security | Warrants |
| Trading Symbol | APGB WS |
| Security Exchange Name | NYSE |
