Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
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| Income Statement [Abstract] | ||||
| Operating revenues | $ 888 | $ 844 | ||
| Operating expenses: | ||||
| Operation and maintenance | 419 | 383 | ||
| Depreciation and amortization | 157 | 145 | ||
| General taxes | 83 | 77 | ||
| Total operating expenses, net | 659 | 605 | ||
| Operating income | 229 | 239 | ||
| Other income (expense): | ||||
| Interest, net | (98) | (96) | ||
| Non-operating benefit costs, net | 20 | 13 | ||
| Other, net | 4 | 3 | ||
| Total other income (expense) | (74) | (80) | ||
| Income before income taxes | 155 | 159 | ||
| Provision for income taxes | 22 | 35 | ||
| Net income attributable to common shareholders | $ 133 | $ 124 | ||
| Basic earnings per share: | ||||
| Net income attributable to common shareholders (dollars per share) | $ 0.73 | $ 0.69 | ||
| Diluted earnings per share: | ||||
| Net income attributable to common shareholders (dollars per share) | [1] | $ 0.73 | $ 0.68 | |
| Weighted-average common shares outstanding: | ||||
| Basic (shares) | 181 | 181 | ||
| Diluted (shares) | 182 | 181 | ||
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