v3.26.1
Commitment and contingencies - Narrative (Details)
kr in Millions, R$ in Millions, $ in Millions
1 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
contract
rig
Jun. 30, 2026
USD ($)
contract
rig
Oct. 31, 2025
USD ($)
Jan. 31, 2025
USD ($)
drillship
rig
Mar. 31, 2023
USD ($)
Jun. 30, 2026
USD ($)
contract
rig
Jun. 30, 2026
BRL (R$)
Aug. 31, 2025
NOK (kr)
Nov. 30, 2015
USD ($)
rig
Other Commitments [Line Items]                  
Contract value deduction percentage                 2.00%
Contract value deduction                 $ 69
Number of active contracts | contract 2 2       2      
Number of future contracts | contract 2 2       2      
Sonadrill | Guarantees in favor of customers                  
Other Commitments [Line Items]                  
Guarantor obligations, maximum exposure, undiscounted $ 1,100 $ 1,100       $ 1,100      
Number of rigs | rig 3 3       3      
Surety Bond                  
Other Commitments [Line Items]                  
Damages sought           $ 84 R$ 435    
Seadrill Serviços de Petróleo Ltda ("Seadrill Brazil") | Tax Year 2009                  
Other Commitments [Line Items]                  
Damages sought $ 84                
Seadrill Serviços de Petróleo Ltda ("Seadrill Brazil") | Tax Year 2008, 2012, 2016, and 2017                  
Other Commitments [Line Items]                  
Damages sought           91      
Sete Brazil Claim                  
Other Commitments [Line Items]                  
Damages sought       $ 213   825      
Number of rigs | rig       28          
Number of drillships | drillship       3          
Delay penalties       10.00%          
Nigeria                  
Other Commitments [Line Items]                  
Number of rigs | rig                 3
SFL Hercules Ltd                  
Other Commitments [Line Items]                  
Amount awarded         $ 37        
Fee expense         11        
Guarantor obligations, maximum exposure, undiscounted 58 $ 58       58   kr 574  
SFL Hercules Ltd | Five Year First Lien Revolving Credit Facility                  
Other Commitments [Line Items]                  
Guarantor obligations, maximum exposure, undiscounted 41 41       41   403  
SFL Hercules Ltd | Bilateral Facility                  
Other Commitments [Line Items]                  
Guarantor obligations, maximum exposure, undiscounted $ 17 17       $ 17   kr 171  
Sonadrill fees claimant                  
Other Commitments [Line Items]                  
Damages sought         $ 72        
Damages paid   $ 16 $ 43