| (dollars in millions) | 2010 | 2009 | ||||||
| Earnings, as defined: | ||||||||
| Income from continuing operations | $ | 870 | $ | 824 | ||||
| Fixed charges, as below | 785 | 735 | ||||||
| Preferred dividend requirements | (7 | ) | (7 | ) | ||||
| Income from continuing operations attributable to noncontrolling interests, net of tax | (1 | ) | — | |||||
| Income taxes, as below | 496 | 413 | ||||||
| Total earnings, as defined | $ | 2,143 | $ | 1,965 | ||||
Fixed Charges, as defined: | ||||||||
| Interest on long-term debt | $ | 724 | $ | 658 | ||||
| Other interest | 45 | 62 | ||||||
| Imputed interest factor in rentals — charged principally to operating expenses | 9 | 8 | ||||||
| Preferred dividend requirements of subsidiaries | 7 | 7 | ||||||
| Total fixed charges, as defined | $ | 785 | $ | 735 | ||||
Income Taxes: | ||||||||
| Income tax expense | $ | 501 | $ | 418 | ||||
| Included in AFUDC — deferred taxes in book depreciation | (5 | ) | (5 | ) | ||||
| Total income taxes | $ | 496 | $ | 413 | ||||
| Ratio of Earnings to Fixed Charges | 2.73 | 2.67 | ||||||
