| Document and Entity Information | Apr. 14, 2023 |
| Document And Entity Information [Line Items] | |
| Entity Address, State or Province | NY |
| Amendment Flag | false |
| Entity Central Index Key | 0001848821 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Apr. 14, 2023 |
| Entity Registrant Name | Global Technology Acquisition Corp. I |
| Entity Incorporation State Country Code | E9 |
| Entity File Number | 001-40948 |
| Entity Tax Identification Number | 66-0969672 |
| Entity Address, Address Line One | 19 W 24th St. |
| Entity Address, Address Line Two | 10th Floor |
| Entity Address, City or Town | New York |
| Entity Address, Postal Zip Code | 10010 |
| City Area Code | (917) |
| Local Phone Number | 338-7786 |
| Written Communications | true |
| 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 0.0001 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 | GTACU |
| Security Exchange Name | NASDAQ |
| Capital Unit, Class A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Ordinary Shares, $0.0001 par value |
| Trading Symbol | GTAC |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants Each Whole Warrant Exercisable For One Class A Ordinary Share At An Exercise Price Of 11.50 [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 | GTACW |
| Security Exchange Name | NASDAQ |
