XML 60 R48.htm IDEA: XBRL DOCUMENT v3.21.2
Financial Risk Management Activities - Additional Information (Detail)
MMBbls in Millions, $ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
vlcc
bbl
Jun. 30, 2021
bbl
MMBbls
$ / bbl
Dec. 31, 2020
MMBbls
Very Large Crude Carriers (VLCCs)      
Derivative Instruments, Gain (Loss) [Line Items]      
Crude oil sold (in barrels of oil) 4,200,000    
Number of VLCCs cargos sold | vlcc 2    
Crude Oil Put Options | West Texas Intermediate      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional amount of crude oil   120,000  
Average monthly floor price (US dollar per barrel) | $ / bbl   55  
Crude Oil Put Options | Brent      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional amount of crude oil   30,000  
Average monthly floor price (US dollar per barrel) | $ / bbl   60  
Commodity Derivative Contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional amount of crude oil | MMBbls   27.6 27.4
Commodity Derivative Contracts | Very Large Crude Carriers (VLCCs)      
Derivative Instruments, Gain (Loss) [Line Items]      
Net gain (loss) from crude oil hedging contracts | $ $ (4)