v3.26.1
Document and Entity Information - USD ($)
 4 Months Ended
Dec. 31, 2025
Mar. 19, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Amendment Flag false    
Document Period End Date Dec. 31, 2025    
Inception Date Sep. 12, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Registrant Name Karbon Capital Partners Corp.    
Entity Central Index Key 0002088749    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Public Float     $ 0
Entity Shell Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity File Number 001-43005    
Entity Incorporation, State or Country Code E9    
Entity Tax Identification Number 98-1883211    
Entity Address, Address Line One 321 Biden Street    
Entity Address, Address Line Two 12th Floor    
Entity Address, City or Town Scranton    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 18505    
City Area Code (570)    
Local Phone Number 558-6100    
Auditor Firm ID 100    
Auditor Location New York, New York    
Auditor Name WithumSmith+Brown, PC    
Auditor Opinion [Text Block]

Opinion on the Financial Statements

We have audited the accompanying balance sheet of Karbon Capital Partners Corp. (the “Company”) as of December 31, 2025, and the related statements of operations, changes in shareholders’ deficit and cash flows for the period from September 12, 2025 (inception) through December 31, 2025 and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of Karbon Capital Partners Corp. as of December 31, 2025 and the results of its operations and its cash flows for the period from September 12, 2025 (inception) through December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

    
Units Each Consisting Of One Class A Ordinary Share And One Fourth Of One Redeemable Warrant      
Document Information [Line Items]      
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one-fourth of one redeemable warrant    
Trading Symbol KBONU    
Security Exchange Name NASDAQ    
Class A Ordinary Shares, Par Value $0.0001 Per Share      
Document Information [Line Items]      
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share    
Trading Symbol KBON    
Security Exchange Name NASDAQ    
Redeemable Warrants, Each Whole Warrant Exercisable For One Class A Ordinary Share, At An Exercise Price Of $11.50 Per Share      
Document Information [Line Items]      
Title of 12(b) Security Redeemable warrants, each whole warrant exercisable for one Class A ordinary share, at an exercise price of $11.50 per share    
Trading Symbol KBONW    
Security Exchange Name NASDAQ    
Class A Ordinary Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   25,622,035  
Class B Ordinary Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   8,625,000