v3.20.1
Impairments - Textual (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Segment Reporting Information [Line Items]    
Impairments $ 521 $ 1
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs 188 110
Lower 48 [Member]    
Segment Reporting Information [Line Items]    
Impairments 511 $ 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