Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Feb. 07, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-5507    
Entity Registrant Name Tellurian Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 06-0842255    
Entity Address, Address Line One 1201 Louisiana Street,    
Entity Address, Address Line Two Suite 3100,    
Entity Address, City or Town Houston,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77002    
City Area Code 832    
Local Phone Number 962-4000    
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     $ 1,687,424
Entity Common Stock, Shares Outstanding   518,493,398  
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000061398    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common stock, par value $0.01 per share    
Trading Symbol TELL    
Security Exchange Name NYSE    
Senior Notes due 2028      
Document Information [Line Items]      
Title of 12(b) Security 8.25% Senior Notes due 2028    
Trading Symbol TELZ    
Security Exchange Name NYSE