v3.20.2
Impairments - Textual (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Segment Reporting Information [Line Items]          
Impairments $ (2)   $ 1 $ 519 $ 2
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs 97   122 285 232
Lower 48 [Member]          
Segment Reporting Information [Line Items]          
Impairments $ 2 $ 511 $ 0 $ 513 $ 0
Asia Pacific and Middle East [Member]          
Segment Reporting Information [Line Items]          
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs   $ 31