Cover Page - shares	3 Months Ended
	Mar. 31, 2021	May 24, 2021
Document Information [Line Items]
Document Type	10-Q
Document Period End Date	Mar. 31, 2021
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Registrant Name	Warburg Pincus Capital Corp I-A
Entity Central Index Key	0001836075
Entity File Number	001-40171
Entity Tax Identification Number	98-1572641
Entity Incorporation, State or Country Code	E9
Entity Current Reporting Status	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Address, Address Line One	450 Lexington Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	878-0600
Title of 12(b) Security	Class A ordinary shares included as part of the units
Trading Symbol	WPCA
Security Exchange Name	NYSE
Entity Shell Company	true
Amendment Flag	false
Entity Ex Transition Period	false
Capital Units [Member]
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-fifth of one redeemable warrant
Trading Symbol	WPCA.U
Security Exchange Name	NYSE
Warrant [Member]
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants included as part of the units
Trading Symbol	WPCA WS
Security Exchange Name	NYSE
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		28,342,178
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,085,544