Properties, Plants and Equipment (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Property, Plant and Equipment [Line Items] | ||||
Impairments | $ 1,140 | $ 853 | $ 4,146 | $ 856 |
San Francisco Refinery Asset Group | ||||
Property, Plant and Equipment [Line Items] | ||||
Impairments | 1,030 | |||
Fair value of PP&E | 940 | $ 940 | ||
PP&E | 1,009 | |||
Refining | San Francisco Refinery Asset Group | ||||
Property, Plant and Equipment [Line Items] | ||||
PP&E | 889 | |||
Intangible assets | 21 | |||
Midstream | ||||
Property, Plant and Equipment [Line Items] | ||||
Impairments | 204 | |||
Midstream | San Francisco Refinery Asset Group | ||||
Property, Plant and Equipment [Line Items] | ||||
PP&E | $ 120 |