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Fair Value of Financial Assets and Liabilities - Changes in Level 3 Commodity Derivatives (Details) - Commodity Contract - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance $ (30) $ (61) $ (63) $ (44)
Settlements 5 4 9 3
(Losses) gains recognized in earnings 1 [1] (11) [1] 30 (27)
Ending Balance (24) (68) $ (24) $ (68)
Transfers Level 3, Net $ 0 $ 0    
[1] Level 3 net gains recognized in earnings are subject to offsetting net losses of derivative instruments categorized as levels 1 and 2 in the income statement.