| Revenues | | 2,863.00 | 3,091.00 | 3,726.00 | 3,248.00 |
| | 9.00 | - | - | - |
| Other Operating Expenses | | 9.00 | - | - | - |
| Interest Income/Expense | | 13.00 | 13.00 | 13.00 | 14.00 |
| Benefits Costs and Expenses | | 2,537.00 | 2,251.00 | 2,313.00 | 2,393.00 |
| Costs And Expenses | | 2,537.00 | 2,251.00 | 2,313.00 | 2,393.00 |
| Income/Loss From Continuing Operations Before Tax | | 326.00 | 840.00 | 1,413.00 | 855.00 |
| Income Tax Expense/Benefit, Current | | 134.00 | 137.00 | 128.00 | 81.00 |
| Income Tax Expense/Benefit, Deferred | | -82.00 | 27.00 | 163.00 | 89.00 |
| Income Tax Expense/Benefit | | 52.00 | 164.00 | 291.00 | 170.00 |
| | 274.00 | 676.00 | 1,122.00 | 685.00 |
| Attributable To Parent | | 274.00 | 676.00 | 1,122.00 | 685.00 |
| Basic Average Shares | | 155.30 | -0.20 | 156.10 | 156.30 |
| Diluted Average Shares | | 157.00 | -0.10 | 157.80 | 157.80 |
| Basic Earnings Per Share | | 1.77 | 4.33 | 7.19 | 4.38 |
| Diluted Earnings Per Share | | 1.75 | 4.29 | 7.11 | 4.34 |
| Common Stock Dividends | 0.94 | 0.94 | 0.87 | 0.87 | 0.87 |