| Revenues | | 1,387.04 | 1,358.93 | 1,364.89 | 1,360.11 |
| Benefits Costs and Expenses | | 1,224.19 | 1,234.72 | 1,168.79 | 1,214.40 |
| Costs And Expenses | | 1,224.19 | 1,234.72 | 1,168.79 | 1,214.40 |
| Income/Loss From Continuing Operations Before Tax | | 162.85 | 124.20 | 196.10 | 145.71 |
| Income Tax Expense/Benefit | | 33.46 | 26.53 | 40.86 | 30.37 |
| | 129.39 | 97.68 | 155.23 | 115.34 |
| Attributable To Parent | | 129.39 | 97.68 | 155.23 | 115.34 |
| Available To Common Stockholders, Basic | | 127.09 | 95.38 | 152.93 | 113.04 |
| Preferred Stock Dividends And Other Adjustments | 2.30 | 2.30 | 2.30 | 2.30 | 2.30 |
| Basic Average Shares | | 59.66 | 59.99 | -0.14 | 60.59 |
| Diluted Average Shares | | 60.18 | 60.48 | -0.14 | 61.03 |
| Basic Earnings Per Share | 2.13 | 2.13 | 1.59 | 2.53 | 1.87 |
| Diluted Earnings Per Share | 2.11 | 2.11 | 1.58 | 2.52 | 1.85 |
| Common Stock Dividends | 0.43 | 0.43 | 0.43 | 0.43 | 0.38 |