XML 17 R1.htm IDEA: XBRL DOCUMENT v3.25.0.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Feb. 14, 2025
Jun. 30, 2024
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
Securities Act File Number 001-33480    
Entity Registrant Name CLEAN ENERGY FUELS CORP.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 33-0968580    
Entity Address, Address Line One 4675 MacArthur Court    
Entity Address, Address Line Two Suite 800    
Entity Address, City or Town Newport Beach    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92660    
City Area Code 949    
Local Phone Number 437-1000    
Title of 12(b) Security Common stock, $0.0001 par value per share    
Trading Symbol CLNE    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding (in shares)   223,605,152  
Entity Public Float     $ 460,704,631
Auditor Name KPMG LLP    
Auditor Firm ID 185    
Auditor Location Irvine, CA    
Entity Central Index Key 0001368265    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Amendment Flag false