Cover
Cover - USD ($) | 12 Months Ended | ||
Dec. 31, 2020 | Apr. 19, 2021 | Jun. 30, 2020 | |
Cover [Abstract] | |||
Document Type | 10-K/A | ||
Amendment Flag | false | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Dec. 31, 2020 | ||
Document Fiscal Period Focus | FY | ||
Document Fiscal Year Focus | 2020 | ||
Current Fiscal Year End Date | --12-31 | ||
Entity File Number | 001-33480 | ||
Entity Registrant Name | CLEAN ENERGY FUELS CORP. | ||
Entity Central Index Key | 0001368265 | ||
Entity Tax Identification Number | 33-0968580 | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Address, Address Line One | 4675 MacArthur Court, 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 | ||
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 | ||
Entity Shell Company | false | ||
Entity Public Float | $ 320,768,899 | ||
Entity Common Stock, Shares Outstanding | 199,857,559 | ||
ICFR Auditor Attestation Flag | true |