v3.25.3
Cover
Oct. 09, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 09, 2025
Entity File Number 001-42886
Entity Registrant Name AA Mission Acquisition Corp. II
Entity Central Index Key 0002075336
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 21 Waterway Avenue
Entity Address, Address Line Two STE 300 #9733
Entity Address, City or Town The Woodlands
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77380
City Area Code 832
Local Phone Number 336-8887
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Units, each consisting of one Class A ordinary share and one-half of one warrant    
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one-half of one warrant  
Trading Symbol YCY.U
Security Exchange Name NYSE
Class A ordinary shares, par value $0.0001 per share    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share  
Trading Symbol YCY
Security Exchange Name NYSE
Warrants Each Whole Warrant Entitles [Member]  
Title of 12(b) Security Warrants, each whole warrant entitles the holder thereof to purchase one
Trading Symbol YCY.WS
Security Exchange Name NYSE