|
Year Ended December 31, 2013 |
Year Ended December 31, 2012 |
|||||||||||
|
Gross |
Net of Taxes |
Gross |
Net of Taxes |
|||||||||
|
(In millions) |
||||||||||||
|
U.S. oil and gas assets |
$ |
1,110 |
$ |
707 |
$ |
1,793 |
$ |
1,142 | ||||
|
Canada oil and gas assets |
843 | 632 | 163 | 122 | ||||||||
|
Midstream assets |
23 | 14 | 68 | 44 | ||||||||
|
Total asset impairments |
$ |
1,976 |
$ |
1,353 |
$ |
2,024 |
$ |
1,308 | ||||