| December 31, 2013 | December 31, 2012 | ||||||||
| Property, Plant and Equipment | Cost | Net | Cost | Net | |||||
| (millions of dollars) | |||||||||
| Upstream | 336,359 | 197,554 | 313,181 | 181,795 | |||||
| Downstream | 54,456 | 23,219 | 53,737 | 23,053 | |||||
| Chemical | 29,487 | 13,965 | 29,437 | 14,085 | |||||
| Other | 14,215 | 8,912 | 12,959 | 8,016 | |||||
| Total | 434,517 | 243,650 | 409,314 | 226,949 | |||||