Cover Page - shares	6 Months Ended
	Jun. 30, 2022	Aug. 15, 2022
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Entity Registrant Name	CARTESIAN GROWTH CORPORATION II
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001889112
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Jun. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Current Reporting Status	No
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Entity File Number	001-41378
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	00-0000000
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
Class A Ordinary Shares
Document Information [Line Items]
Title of 12(b) Security	Class A Ordinary Shares, par value $0.0001 per share
Trading Symbol	RENE
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		23,000,000
Class B Ordinary shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,750,000
Capital Units
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share and one-third of one Warrant
Trading Symbol	RENEU
Security Exchange Name	NASDAQ
Warrant
Document Information [Line Items]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one Class A Ordinary Share, at an exercise price of $11.50
Trading Symbol	RENEW
Security Exchange Name	NASDAQ