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Financial instruments related to commodity contracts - Markets related risks (Details) - Derivative financial instruments related to commodity contracts - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Integrated Gas, Renewables & Power activities | Integrated Gas, Renewables & Power      
Market related risk      
Period of possible future changes in market values 1 day    
Historical period analysed in value-at-risk models 2 years    
Confidence level (as a percent) 97.50% 97.50% 97.50%
Value at risk $ 92 $ 30 $ 27
Integrated Gas, Renewables & Power activities | Integrated Gas, Renewables & Power | Maximum      
Market related risk      
Value at risk 119 80 51
Integrated Gas, Renewables & Power activities | Integrated Gas, Renewables & Power | Minimum      
Market related risk      
Value at risk 15 9 6
Integrated Gas, Renewables & Power activities | Integrated Gas, Renewables & Power | Average      
Market related risk      
Value at risk $ 53 $ 28 $ 21
Crude oil, petroleum products and freight rates activities | Trading & Shipping      
Market related risk      
Period of possible future changes in market values 1 day    
Historical period analysed in value-at-risk models 400 days    
Confidence level (as a percent) 97.50% 97.50% 97.50%
Period to exceed value-at-risk loss measure if exposure is unchanged 40 days    
Value at risk $ 27 $ 12 $ 19
Crude oil, petroleum products and freight rates activities | Trading & Shipping | Maximum      
Market related risk      
Value at risk 48 36 30
Crude oil, petroleum products and freight rates activities | Trading & Shipping | Minimum      
Market related risk      
Value at risk 9 9 6
Crude oil, petroleum products and freight rates activities | Trading & Shipping | Average      
Market related risk      
Value at risk $ 22 $ 18 $ 15