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Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total operating revenue | $ 3,009 | $ 4,269 | $ 2,815 | $ 2,564 | $ 3,220 | $ 3,672 | $ 2,965 | $ 2,463 | $ 12,657 | $ 12,320 | $ 11,869
Operating (loss) income | (2,041) | 739 | 420 | 330 | (38) | 553 | 470 | 471 | (552) | 1,456 | 2,062
Net (loss) income |  |  |  |  |  |  |  |  | (316) | 668 | 1,425
Income (loss) from continuing operations | (1,434) | 544 | 298 | 242 | (534) | 501 | 309 | 392 | (350) | 668 | 1,413
Income (loss) from discontinued operations, net | 34 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 0 | 12
Net income (loss) attributable to common shareholders | $ (1,430) | $ 513 | $ 276 | $ 218 | $ (545) | $ 470 | $ 278 | $ 362 | $ (423) | $ 565 | $ 1,311
Basic (loss) earnings per share – continuing operations: |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | $ (4.49) | $ 1.57 | $ 0.85 | $ 0.67 | $ (1.67) | $ 1.44 | $ 0.85 | $ 1.11 | $ (1.40) | $ 1.73 | $ 3.99
Discontinued operations (in dollars per share) | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.03
Total (in dollars per share) | (4.39) | 1.57 | 0.85 | 0.67 | (1.67) | 1.44 | 0.85 | 1.11 | (1.30) | 1.73 | 4.02
Diluted (loss) earnings per share – continuing operations: |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | (4.49) | 1.57 | 0.84 | 0.67 | (1.66) | 1.43 | 0.85 | 1.10 | (1.40) | 1.72 | 3.94
Diluted earnings (loss) per share – discontinued operations (in dollars per share) | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.03
Total (in dollars per share) | (4.39) | 1.57 | 0.84 | 0.67 | (1.66) | 1.43 | 0.85 | 1.10 | (1.30) | 1.72 | 3.97
Dividends declared per common share (in dollars per share) | $ 0.6125 | $ 0.6050 | $ 0.6050 | $ 0.6050 | $ 0.6050 | $ 0.5425 | $ 0.5425 | $ 0.5425 | $ 2.4275 | $ 2.2325 | $ 1.9825
Impairment and other |  |  |  |  |  |  |  |  | $ 78 | $ 738 | $ 21
Edison International Parent and Other |  |  |  |  |  |  |  |  |  |  |
Diluted (loss) earnings per share – continuing operations: |  |  |  |  |  |  |  |  |  |  |
Write-down for re-measurement of deferred taxes as a result of the Tax Cuts and Jobs Act |  |  |  |  | $ 433 |  |  |  |  |  |
SCE |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Data [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total operating revenue | $ 2,994 | $ 4,260 | $ 2,803 | $ 2,554 | 3,193 | $ 3,652 | $ 2,953 | $ 2,456 | 12,611 | 12,254 | 11,830
Operating (loss) income | (2,013) | 754 | 439 | 414 | (28) | 569 | 508 | 498 | (406) | 1,547 | 2,182
Net (loss) income | (1,399) | 567 | 327 | 316 | (79) | 497 | 338 | 380 | (189) | 1,136 | 1,499
Net income (loss) attributable to common shareholders | (1,429) | 536 | 297 | 286 | (109) | 465 | 307 | 349 | $ (310) | $ 1,012 | $ 1,376
Diluted (loss) earnings per share – continuing operations: |  |  |  |  |  |  |  |  |  |  |
Dividends declared per common share (in dollars per share) |  |  |  |  |  |  |  |  | $ 1.32 | $ 1.81 | $ 1.61
Common dividends declared | 0 | $ 264 | $ 100 | $ 212 | 212 | $ 191 | $ 191 | $ 191 | $ 576 | $ 785 |
Impairment and other |  |  |  |  |  |  |  |  | (12) | $ 716 | $ 0
SCE | Revised San Onofre settlement agreement |  |  |  |  |  |  |  |  |  |  |
Diluted (loss) earnings per share – continuing operations: |  |  |  |  |  |  |  |  |  |  |
Impairment and other |  |  |  |  | 716 |  |  |  |  |  |
Impairment and other charges, net of tax |  |  |  |  | $ 448 |  |  |  |  |  |
2017/2018 Wildfire/Mudslide Events | SCE |  |  |  |  |  |  |  |  |  |  |
Diluted (loss) earnings per share – continuing operations: |  |  |  |  |  |  |  |  |  |  |
Wildfire-related claims, net of expected recoveries | $ 2,500 |  |  |  |  |  |  |  | $ 2,534 |  |

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