2006
| Operating revenue | Operating expenses | Operating profit margin | Salaries, wages and benefits | |
|---|---|---|---|---|
| millions of dollars | percent | millions of dollars | ||
| 2006 | 2,241.1 | 2,163.6 | 3.5 | 947.7 |
| Operating revenue | Operating expenses | Operating profit margin | Salaries, wages and benefits | |
|---|---|---|---|---|
| millions of dollars | percent | millions of dollars | ||
| 2006 | 1,516.0 | 1,484.4 | 2.1 | 413.2 |
| Operating revenue | Operating expenses | Operating profit margin | Salaries, wages and benefits | |
|---|---|---|---|---|
| millions of dollars | percent | millions of dollars | ||
| 2006 | 292.9 | 262.3 | 10.5 | 78.7 |