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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2022
Jan. 27, 2023
Jun. 30, 2022
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Document Transition Report false    
Entity File Number 001-38147    
Entity Registrant Name CONSOL Energy Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 82-1954058    
Entity Address, Address Line One 275 Technology Drive    
Entity Address, Address Line Two Suite 101    
Entity Address, City or Town Canonsburg    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 15317-9565    
City Area Code 724    
Local Phone Number 416-8300    
Title of 12(b) Security Common Stock ($0.01 par value)    
Trading Symbol CEIX    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 1,682,099,918
Entity Common Stock, Shares Outstanding   34,746,904  
Entity Central Index Key 0001710366    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE:
Portions of CONSOL Energy Inc.'s Proxy Statement for the 2023 Annual Meeting of Stockholders to be filed within 120 days of the end of the registrant's fiscal year are incorporated by reference in Items 10, 11, 12, 13 and 14 of Part III.