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Fair Value Measurement - Schedule of Fair Value Hierarchy for Gross Financial Assets and Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commodity derivatives $ 1,218 $ 2,037
Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,268 1,222
Commodity derivatives 1,218 2,037
Total assets 2,486 3,259
Commodity derivatives 1,167 2,010
Total liabilities 1,167 2,010
Fair Value, Measurements, Recurring | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 195 178
Commodity derivatives 640 958
Total assets 835 1,136
Commodity derivatives 663 906
Total liabilities 663 906
Fair Value, Measurements, Recurring | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,073 1,044
Commodity derivatives 464 951
Total assets 1,537 1,995
Commodity derivatives 485 843
Total liabilities 485 843
Fair Value, Measurements, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 0 0
Commodity derivatives 114 128
Total assets 114 128
Commodity derivatives 19 261
Total liabilities $ 19 $ 261