Impairments (Tables) |
3 Months Ended |
|---|---|
Mar. 31, 2020 | |
| Impairments [Abstract] | |
| Before-tax impairment charges [Table Text Block] | Note 8—Impairments During the three-month periods ended March charges within the following segments: Millions of Dollars March 31 2020 2019 Lower 48 511
-
Europe and North Africa 10
1
$ 521
1
|