v3.26.1
Document and Entity Information
Sep. 01, 2026
Cover [Abstract]  
Entity File Number 940-63
Amendment Flag false
Entity Central Index Key 0002079173
Document Type 8-K
Document Period End Date Sep. 01, 2026
Entity Registrant Name AMERICAN EXCEPTIONALISM ACQUISITION CORP. A
Entity Incorporation State Country Code E9
Entity Tax Identification Number 98-1871331
Entity Address, Address Line One 801 Jefferson Ave.
Entity Address, Address Line Two Suite 250
Entity Address, City or Town Redwood
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94063
City Area Code (650)
Local Phone Number 521-9007
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Class A ordinary shares, $0.0001 par value per share
Trading Symbol AEXA
Security Exchange Name NYSE
Entity Emerging Growth Company true
Entity Ex Transition Period false