Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions |
3 Months Ended |
9 Months Ended |
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
| Income Statement [Abstract] |
|
|
|
|
|
| Operating revenues |
|
$ 1,079
|
$ 1,013
|
$ 2,854
|
$ 2,708
|
| Operating expenses: |
|
|
|
|
|
| Operation and maintenance |
|
419
|
395
|
1,193
|
1,132
|
| Depreciation and amortization |
|
154
|
144
|
451
|
430
|
| General taxes |
|
73
|
68
|
225
|
209
|
| (Gain) on asset dispositions and purchases |
|
0
|
0
|
0
|
(9)
|
| Total operating expenses, net |
|
646
|
607
|
1,869
|
1,762
|
| Operating income |
|
433
|
406
|
985
|
946
|
| Other income (expense): |
|
|
|
|
|
| Interest, net |
|
(99)
|
(97)
|
(296)
|
(284)
|
| Non-operating benefit costs, net |
|
12
|
4
|
37
|
12
|
| Other, net |
|
6
|
5
|
17
|
23
|
| Total other income (expense) |
|
(81)
|
(88)
|
(242)
|
(249)
|
| Income before income taxes |
|
352
|
318
|
743
|
697
|
| Provision for income taxes |
|
88
|
78
|
179
|
174
|
| Net income attributable to common shareholders |
|
$ 264
|
$ 240
|
$ 564
|
$ 523
|
| Basic earnings per share: |
|
|
|
|
|
| Net income attributable to common shareholders (dollars per share) |
[1] |
$ 1.46
|
$ 1.33
|
$ 3.11
|
$ 2.90
|
| Diluted earnings per share: |
|
|
|
|
|
| Net income attributable to common shareholders (dollars per share) |
[1] |
$ 1.46
|
$ 1.33
|
$ 3.11
|
$ 2.89
|
| Weighted-average common shares outstanding: |
|
|
|
|
|
| Basic (shares) |
|
181
|
181
|
181
|
181
|
| Diluted (shares) |
|
182
|
181
|
181
|
181
|
|
|