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Document and Entity Information
Oct. 14, 2021
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Oct. 14, 2021
Entity Registrant Name Decarbonization Plus Acquisition Corporation III
Entity Incorporation, State or Country Code DE
Entity File Number 001-40284
Entity Tax Identification Number 86-1888095
Entity Address, Address Line One 2744 Sand Hill Road
Entity Address, Address Line Two Suite 100
Entity Address, City or Town Menlo Park
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94025
City Area Code 212
Local Phone Number 993-0076
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Document Period End Date false
Entity Central Index Key 0001844862
Class A Common Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Class A common stock, par value $0.0001 per share
Trading Symbol DCRC
Security Exchange Name NASDAQ
Warrants [Member]  
Document Information [Line Items]  
Title of 12(b) Security Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share
Trading Symbol DCRCW
Security Exchange Name NASDAQ
Units [Member]  
Document Information [Line Items]  
Title of 12(b) Security Units, each consisting of one share of Class A common stock and one-third of one warrant
Trading Symbol DCRCU
Security Exchange Name NASDAQ