Cover Page - shares	9 Months Ended
	Sep. 30, 2021	Nov. 12, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-39474
Entity Registrant Name	Burgundy Technology Acquisition Corp
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	00-0000000
Entity Address, Address Line One	PO Box 1093
Entity Address, Address Line Two	Boundary Hall, Cricket Square
Entity Address, City or Town	Grand Cayman
Entity Address, Postal Zip Code	KY1-1102
Entity Address, Country	KY
City Area Code	345
Local Phone Number	945-7099
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
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001815526
Amendment Flag	false
Units, each consisting of one Class A Ordinary Share and one-half of one Redeemable Warrant
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share and one-half of one Redeemable Warrant
Trading Symbol	BTAQU
Security Exchange Name	NASDAQ
Class A ordinary shares
Document Information [Line Items]
Title of 12(b) Security	Class A Ordinary Shares, par value $0.0001 per share
Trading Symbol	BTAQ
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		35,562,500
Class B ordinary shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		8,625,000
Warrants, each whole warrant exercisable for one Class A Ordinary Share for $11.50 per share
Document Information [Line Items]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one Class A Ordinary Share for $11.50 per share
Trading Symbol	BTAQW
Security Exchange Name	NASDAQ