XML 202 R190.htm IDEA: XBRL DOCUMENT v3.20.4
Variable Interest Entities - Additional Information (Details)
$ in Millions
 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
rig
Dec. 31, 2020
USD ($)
rig
Dec. 31, 2018
USD ($)
Jul. 01, 2018
USD ($)
Dec. 31, 2020
USD ($)
rig
Dec. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2013
arrangement
Variable Interest Entity [Line Items]                
Number of sale and leaseback arrangements | arrangement               2
Equity of the VIEs $ (3,140) $ (3,140)     $ (3,140) $ 1,642    
Number of leased rigs | rig 3 3     3      
Fair value measurement on deconsolidation of VIE [1]     $ 0 $ 0 $ 509 0    
Write off of unamortized debt discount   $ 87 $ 0 $ 0 87 0    
Total related party receivables $ 477 477     477 704    
Maximum guarantee 282 282     282 311    
Guarantees in favor of customers                
Variable Interest Entity [Line Items]                
Maximum guarantee 150 150     150 165    
Northern Ocean | Guarantees in favor of customers                
Variable Interest Entity [Line Items]                
Maximum guarantee 100 100     100 100    
Related party loans payable | Ship Finance SPV's                
Variable Interest Entity [Line Items]                
Due to related parties, carrying value prior to deconsolidation 933 933     933      
Due to related parties, fair value at deconsolidation 424 424     424      
Fair value measurement on deconsolidation of VIE         509      
Write off of unamortized debt discount 2              
Work performed to mobilize drilling rig for first drilling contract                
Variable Interest Entity [Line Items]                
Total related party receivables $ 142 $ 142     $ 142 60    
Variable Interest Entity, primary beneficiary                
Variable Interest Entity [Line Items]                
Equity of the VIEs           $ 140 $ 137  
[1] Includes transactions with related parties. Refer to Note 32 - "Related party transactions" for further details.