Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 15, 2021
Entity Listings [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Document Transition Report	false
Entity File Number	001-39572
Entity Registrant Name	CLIMATE REAL IMPACT SOLUTIONS II ACQUISITION CORP
Entity Central Index Key	0001835713
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-4141622
Entity Address, Address Line One	300 Carnegie Center
Entity Address, Address Line Two	Suite 150
Entity Address, City or Town	Princeton
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	08540
City Area Code	212
Local Phone Number	847-0360
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	true
Units [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A common stock, $0.0001 par value, and one-fifth of one redeemable warrant
Trading Symbol	CLIM.U
Security Exchange Name	NYSE
Redeemable Warrants [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Redeemable warrants included as part of the units, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50
Trading Symbol	CLIM WS
Security Exchange Name	NYSE
Class A Common Stock [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Shares of Class A common stock included as part of the units
Trading Symbol	CLIM
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		24,150,000
Class B Common Stock [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		6,037,500