| Revenues | | 31,558.00 | 31,506.00 | 33,466.00 | 30,709.00 |
| | 7,221.00 | 7,316.00 | - | - |
| Selling, General, and Administrative | | 7,221.00 | 7,316.00 | - | - |
| Costs And Expenses | | 24,520.00 | 24,848.00 | 27,678.00 | 24,590.00 |
| Operating Income/Loss | | 7,038.00 | 6,658.00 | 5,788.00 | 6,119.00 |
| Nonoperating Income/Loss | | -1,216.00 | -1,260.00 | -1,523.00 | 4,534.00 |
| Income/Loss From Equity Method Investments | | -29.00 | -41.00 | -10.00 | -20.00 |
| Income/Loss From Continuing Operations Before Tax | | 5,822.00 | 5,398.00 | 4,265.00 | 10,653.00 |
| Income Tax Expense/Benefit | | 784.00 | 1,179.00 | 109.00 | 976.00 |
| Income/Loss From Continuing Operations After Tax | | 5,038.00 | 4,219.00 | 4,156.00 | 9,677.00 |
| Income/Loss From Discontinued Operations, Net Of Tax | | -28.00 | -38.00 | - | - |
| | 5,010.00 | 4,181.00 | 4,156.00 | 9,677.00 |
| Attributable To Parent | | 4,627.00 | 3,829.00 | 3,788.00 | 9,314.00 |
| Available To Common Stockholders, Basic | | 4,591.00 | 3,793.00 | 3,752.00 | 9,278.00 |
| Preferred Stock Dividends And Other Adjustments | 36.00 | 36.00 | 36.00 | 36.00 | 36.00 |
| Attributable To Noncontrolling Interest | | 383.00 | 352.00 | 368.00 | 363.00 |
| Basic Average Shares | | 6,938.00 | 7,017.00 | -24.00 | 7,156.00 |
| Diluted Average Shares | | 6,946.00 | 7,027.00 | -24.00 | 7,169.00 |
| Basic Earnings Per Share | | 0.66 | 0.54 | 0.53 | 1.29 |
| Diluted Earnings Per Share | | 0.66 | 0.54 | 0.53 | 1.29 |
| Common Stock Dividends | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 |
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