v3.25.3
Cover
Oct. 16, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 16, 2025
Entity File Number 001-41378
Entity Registrant Name Cartesian Growth Corporation II
Entity Central Index Key 0001889112
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 505 Fifth Avenue
Entity Address, Address Line Two 15th Floor
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 461-6363
Written Communications false
Soliciting Material true
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