| Document and Entity Information | Mar. 09, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Document Period End Date | Mar. 9, 2021 |
| Entity Registrant Name | Warburg Pincus Capital Corp I-A |
| Entity Incorporation, State or Country Code | E9 |
| Entity File Number | 001-40171 |
| Entity Tax Identification Number | 98-1572641 |
| 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 |
| 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 | 0001836075 |
| Amendment Flag | 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 | WPCB.U |
| Security Exchange Name | NYSE |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A ordinary shares included as part of the units |
| Trading Symbol | WPCB |
| Security Exchange Name | NYSE |
| Warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 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 | WPCB WS |
| Security Exchange Name | NYSE |
