| Document and Entity Information | Dec. 01, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 1, 2021 |
| Entity Registrant Name | Altimeter Growth Corp. |
| Entity Incorporation, State or Country Code | E9 |
| Entity File Number | 001-39573 |
| Entity Tax Identification Number | 98-1554598 |
| Entity Address, Address Line One | 2550 Sand Hill Road, Suite 150 |
| Entity Address, City or Town | Menlo Park |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94025 |
| City Area Code | 650 |
| Local Phone Number | 549-9145 |
| 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 |
| Entity Central Index Key | 0001823340 |
| Amendment Flag | false |
| Class A Ordinary Shares [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A ordinary shares included as part of the units |
| Trading Symbol | AGC |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable [Member] | |
| Document Information [Line Items] | |
| 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 | AGCWW |
| Security Exchange Name | NASDAQ |
| Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-fifth of one redeemable warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one Class A ordinary share, $0.0001 par value, andone-fifthof one redeemable warrant |
| Trading Symbol | AGCUU |
| Security Exchange Name | NASDAQ |
