Cover Page - USD ($)	11 Months Ended
	Dec. 31, 2021	Mar. 02, 2022	Oct. 21, 2021
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Annual Report	true
Document Transition Report	false
Current Fiscal Year End Date	--12-31
Entity Registrant Name	Global Technology Acquisition Corp. I
Entity Central Index Key	0001848821
Entity File Number	001-40948
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	66-0969672
Entity Address, Address Line One	19 W 24th Street
Entity Address, Address Line Two	10th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10010
City Area Code	323
Local Phone Number	577-9874
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
Entity Shell Company	true
Title of 12(b) Security	Class A Ordinary Shares, $0.0001 par value per share
Trading Symbol	GTAC
Security Exchange Name	NASDAQ
ICFR Auditor Attestation Flag	false
Entity Public Float			$ 200,800,000
Auditor Firm ID	688
Auditor Name	Marcum LLP
Auditor Location	San Francisco, California
Capital Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,432,051
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share, $0.0001 par value per share and one-half of one redeemable warrant
Trading Symbol	GTACU
Security Exchange Name	NASDAQ
Warrant [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,283,964
Title of 12(b) Security	Redeemable warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 per share
Trading Symbol	GTACW
Security Exchange Name	NASDAQ
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		14,567,949
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,000,000