v3.26.1
Cover
Jun. 24, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 24, 2026
Current Fiscal Year End Date --12-31
Entity File Number 001-43368
Entity Registrant Name CARTESIAN GROWTH CORPORATION IV
Entity Central Index Key 0002126043
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 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-third of one redeemable warrant  
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant
Trading Symbol CGCFU
Security Exchange Name NASDAQ
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 CGCF
Security Exchange Name NASDAQ
Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50  
Title of 12(b) Security Warrants, each whole warrant exercisable for one Class A ordinary
Trading Symbol CGCFW
Security Exchange Name NASDAQ