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Derivatives - Fair Value (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020
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Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Collateral related to marketing derivatives | $ 202 | $ 85
Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Collateral paid netted against derivative liabilities | 282 | 374
Other current assets | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting, asset | 0 | 0
Total net fair value, asset | 8 | 25
Other current assets | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting, asset | (1,732) | (1,204)
Total net fair value, asset | 53 | 31
Long-term receivables and other assets, net | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting, asset | (38) | (7)
Total net fair value, asset | 2 | 2
Accrued liabilities | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability |  | 0
Total net fair value, liability |  | (42)
Accrued liabilities | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | 1,732 | 1,204
Total net fair value, liability | (223) | (129)
Accrued liabilities | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | 0 | 0
Total net fair value, liability | (708) | (936)
Deferred credits and other liabilities - other | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | 0 |
Total net fair value, liability | (98) |
Deferred credits and other liabilities - other | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | 38 | 7
Total net fair value, liability | 0 | 0
Deferred credits and other liabilities - other | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Netting and collateral, liability | 0 | 0
Total net fair value, liability | (604) | (822)
Level 1 | Other current assets | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 0 | 0
Level 1 | Other current assets | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 1,649 | 1,155
Level 1 | Long-term receivables and other assets, net | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 38 | 7
Level 1 | Accrued liabilities | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross |  | 0
Level 1 | Accrued liabilities | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | (1,861) | (1,252)
Level 1 | Accrued liabilities | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 | 0
Level 1 | Deferred credits and other liabilities - other | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 |
Level 1 | Deferred credits and other liabilities - other | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | (38) | (7)
Level 1 | Deferred credits and other liabilities - other | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 | 0
Level 2 | Other current assets | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 8 | 25
Level 2 | Other current assets | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 136 | 80
Level 2 | Long-term receivables and other assets, net | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 2 | 2
Level 2 | Accrued liabilities | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross |  | (42)
Level 2 | Accrued liabilities | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | (94) | (81)
Level 2 | Accrued liabilities | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | (708) | (936)
Level 2 | Deferred credits and other liabilities - other | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | (98) |
Level 2 | Deferred credits and other liabilities - other | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 | 0
Level 2 | Deferred credits and other liabilities - other | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | (604) | (822)
Level 3 | Other current assets | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 0 | 0
Level 3 | Other current assets | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 0 | 0
Level 3 | Long-term receivables and other assets, net | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative asset, gross | 0 | 0
Level 3 | Accrued liabilities | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross |  | 0
Level 3 | Accrued liabilities | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 | 0
Level 3 | Accrued liabilities | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 | 0
Level 3 | Deferred credits and other liabilities - other | Collars and Call Options |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 |
Level 3 | Deferred credits and other liabilities - other | Marketing Derivatives |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | 0 | 0
Level 3 | Deferred credits and other liabilities - other | Interest Rate Swaps |  |
Gross and net fair values of outstanding derivatives (in millions) |  |
Commodity contract derivative liability, gross | $ 0 | $ 0

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