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Formation and Basis of Presentation - Additional Information (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
May 10, 2018
USD ($)
$ / shares
shares
Nov. 21, 2017
USD ($)
shares
Dec. 31, 2020
USD ($)
Segment
$ / shares
Dec. 31, 2019
USD ($)
$ / shares
Dec. 31, 2018
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Common stock par value | $ / shares $ 0.01   $ 0.01 $ 0.01  
Senior notes, outstanding amount     $ 993,314 $ 746,928  
Number of reportable segment | Segment     1    
Allowance for uncollectable receivables     $ 9,200 $ 9,900  
ASU 2016-13          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Change in accounting principle, accounting standards update, adopted [true or false]     true    
Change in accounting principle, accounting standards update, adoption date     Jan. 01, 2020    
Change in accounting principle, accounting standards update, immaterial effect [true false]     true    
Talos Energy LLC Stakeholders | Talos Energy Inc.          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Percentage of voting interest acquired 63.00%        
Stone Energy Corporation Stockholders | Talos Energy Inc.          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Percentage of voting interest acquired 37.00%        
7.50% Senior Notes due 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate     7.50% 7.50%  
Senior notes, maturity date     May 31, 2022 May 31, 2022  
Senior notes, principal amount     $ 6,100    
11.00% Second-Priority Senior Secured Notes – due April 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate     11.00% 11.00%  
Senior notes, maturity date     Apr. 03, 2022 Apr. 03, 2022  
Senior Notes | 9.75% Senior Notes          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Proceeds from issuance of senior notes   $ 102,000      
Debt instrument interest rate   9.75%      
Shares issued on exchange agreement | shares   2,874,049      
Senior Notes | 9.75% Senior Notes ? due July 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Senior notes, maturity date     Jul. 31, 2022    
Senior Notes | 7.50% Senior Notes due 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate   7.50% 7.50%   7.50%
Senior notes, maturity date     May 31, 2022    
Proceeds from Issuance of senior secured notes in exchange of 11% senior secured notes   $ 137,400      
Senior notes, principal amount $ 81,500        
Senior notes, outstanding amount $ 6,100   $ 6,060 $ 6,060  
Senior Notes | 11.00% Second-Priority Senior Secured Notes – due April 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate   11.00% 11.00%   11.00%
Senior notes, maturity date     Apr. 03, 2022    
Senior notes, outstanding amount     $ 347,254 $ 390,868  
Debt instrument interest rate exchanged percentage 11.00%        
Bridge Loans | 11.00% Bridge Loans          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate   11.00%      
Proceeds from issuance of bridge loans in exchange of 11% senior secured notes   $ 172,000      
Stone Energy Corporation          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Closing date of merger agreement     May 10, 2018    
Stone Energy Corporation | 7.50% Senior Notes due 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate     7.50%    
Senior notes, maturity date     May 31, 2022    
Senior notes, principal amount     $ 6,100    
Stone Energy Corporation | 11.00% Second-Priority Senior Secured Notes – due April 2022          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Debt instrument interest rate     11.00%    
Senior notes, maturity date     Apr. 03, 2022    
Senior notes, principal amount     $ 347,300    
Talos Production LLC          
Basis Of Presentation And Schedule Of Accounting Policy [Line Items]          
Percentage of voting interest acquired 100.00%        
Share issued on merger | shares 31,244,085