| Revenues | | 12,153.00 | 11,924.00 | 12,432.00 | 12,470.00 |
| | 1,565.00 | 1,541.00 | - | - |
| Selling, General, and Administrative | | 1,565.00 | 1,541.00 | - | - |
| Interest Income/Expense | | 113.00 | 116.00 | 116.00 | 111.00 |
| Benefits Costs and Expenses | | 9,386.00 | 9,805.00 | 9,329.00 | 10,126.00 |
| Costs And Expenses | | 9,386.00 | 9,805.00 | 9,329.00 | 10,126.00 |
| Income/Loss From Equity Method Investments | | 75.00 | 23.00 | 57.00 | 74.00 |
| Income/Loss From Continuing Operations Before Tax | | 2,767.00 | 2,119.00 | 3,103.00 | 2,344.00 |
| Income Tax Expense/Benefit | | 559.00 | 408.00 | 607.00 | 456.00 |
| | 2,208.00 | 1,711.00 | 2,496.00 | 1,888.00 |
| Attributable To Parent | | 2,208.00 | 1,711.00 | 2,496.00 | 1,888.00 |
| Available To Common Stockholders, Basic | | 2,193.00 | 1,699.00 | 2,477.00 | 1,875.00 |
| Basic Average Shares | | 210.50 | 215.20 | -1.40 | 224.10 |
| Diluted Average Shares | | 213.60 | 218.40 | -1.30 | 227.50 |
| Basic Earnings Per Share | | 10.41 | 7.89 | 11.14 | 8.37 |
| Diluted Earnings Per Share | | 10.26 | 7.78 | 10.98 | 8.24 |
| Common Stock Dividends | 1.25 | 1.25 | 1.10 | - | 1.10 |
| Undistributed Earnings/Loss Allocated To Participating Securities, Basic | | 15.00 | 12.00 | 19.00 | 13.00 |
