CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions |
Total |
San Diego Gas and Electric Company [Member] |
Southern California Gas Company [Member] |
Preferred stock [Member]
Southern California Gas Company [Member]
|
Common Stock [Member] |
Common Stock [Member]
San Diego Gas and Electric Company [Member]
|
Common Stock [Member]
Southern California Gas Company [Member]
|
Retained earnings [Member] |
Retained earnings [Member]
San Diego Gas and Electric Company [Member]
|
Retained earnings [Member]
Southern California Gas Company [Member]
|
Accumulated other comprehensive income (loss) [Member] |
Accumulated other comprehensive income (loss) [Member]
San Diego Gas and Electric Company [Member]
|
Accumulated other comprehensive income (loss) [Member]
Southern California Gas Company [Member]
|
Shareholders' equity [Member] |
Shareholders' equity [Member]
San Diego Gas and Electric Company [Member]
|
Non-controlling interests [Member] |
Non-controlling interests [Member]
San Diego Gas and Electric Company [Member]
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beginning Balance at Dec. 31, 2013 | $ 11,850 | $ 4,719 | $ 2,549 | $ 22 | $ 2,409 | $ 1,338 | $ 866 | $ 8,827 | $ 3,299 | $ 1,679 | $ (228) | $ (9) | $ (18) | $ 11,008 | $ 4,628 | $ 842 | $ 91 |
| Net income | 1,262 | 527 | 333 | 1,162 | 507 | 333 | 1,162 | 507 | 100 | 20 | |||||||
| Comprehensive income (loss) | (290) | (1) | (269) | (3) | (269) | (3) | (21) | 2 | |||||||||
| Share-based compensation expense | 48 | 48 | 48 | ||||||||||||||
| Preferred stock dividends declared | (1) | (1) | |||||||||||||||
| Common stock dividends declared | (649) | (200) | (100) | (649) | (200) | (100) | (649) | (200) | |||||||||
| Preferred dividends of subsidiary | (1) | (1) | (1) | ||||||||||||||
| Issuances of common stock | 97 | 97 | 97 | ||||||||||||||
| Repurchases of common stock | (38) | (38) | (38) | ||||||||||||||
| Distributions to noncontrolling interests | (107) | (53) | (107) | (53) | |||||||||||||
| Equity contributed by noncontrolling interests | 1 | 1 | |||||||||||||||
| Purchase of noncontrolling interest in subsidiary | (73) | (32) | (32) | (41) | |||||||||||||
| Ending balance at Dec. 31, 2014 | 12,100 | 4,992 | 2,781 | 22 | 2,484 | 1,338 | 866 | 9,339 | 3,606 | 1,911 | (497) | (12) | (18) | 11,326 | 4,932 | 774 | 60 |
| Net income | 1,448 | 606 | 420 | 1,350 | 587 | 420 | 1,350 | 587 | 98 | 19 | |||||||
| Comprehensive income (loss) | (334) | 10 | (1) | (309) | 4 | (1) | (309) | 4 | (25) | 6 | |||||||
| Share-based compensation expense | 52 | 52 | 52 | ||||||||||||||
| Preferred stock dividends declared | (1) | (1) | |||||||||||||||
| Common stock dividends declared | (694) | (300) | (50) | (694) | (300) | (50) | (694) | (300) | |||||||||
| Preferred dividends of subsidiary | (1) | (1) | (1) | ||||||||||||||
| Issuances of common stock | 107 | 107 | 107 | ||||||||||||||
| Repurchases of common stock | (74) | (74) | (74) | ||||||||||||||
| Tax benefit related to share-based compensation | 52 | 52 | 52 | ||||||||||||||
| Distributions to noncontrolling interests | (80) | (32) | (80) | (32) | |||||||||||||
| Equity contributed by noncontrolling interests | 3 | 3 | |||||||||||||||
| Ending balance at Dec. 31, 2015 | 12,579 | 5,276 | 3,149 | 22 | 2,621 | 1,338 | 866 | 9,994 | 3,893 | 2,280 | (806) | (8) | (19) | 11,809 | 5,223 | 770 | 53 |
| Cumulative-effect adjustment from change in accounting principle | 107 | 23 | 15 | 107 | 23 | 15 | 107 | 23 | |||||||||
| Net income | 1,519 | 565 | 350 | 1,371 | 570 | 350 | 1,371 | 570 | 148 | (5) | |||||||
| Comprehensive income (loss) | 52 | 10 | (3) | 38 | (3) | 38 | 14 | 10 | |||||||||
| Share-based compensation expense | 52 | 52 | 52 | ||||||||||||||
| Preferred stock dividends declared | (1) | (1) | |||||||||||||||
| Common stock dividends declared | (754) | (175) | (754) | (175) | (754) | (175) | |||||||||||
| Preferred dividends of subsidiary | (1) | (1) | (1) | ||||||||||||||
| Issuances of common stock | 104 | 104 | 104 | ||||||||||||||
| Repurchases of common stock | (56) | (56) | (56) | ||||||||||||||
| Sale of noncontrolling interests, net of offering costs | 1,701 | 261 | 20 | 281 | 1,420 | ||||||||||||
| Distributions to noncontrolling interests | (65) | (23) | (65) | (23) | |||||||||||||
| Equity contributed by noncontrolling interests | 3 | 2 | 3 | 2 | |||||||||||||
| Ending balance at Dec. 31, 2016 | $ 15,241 | $ 5,678 | $ 3,510 | $ 22 | $ 2,982 | $ 1,338 | $ 866 | $ 10,717 | $ 4,311 | $ 2,644 | $ (748) | $ (8) | $ (22) | $ 12,951 | $ 5,641 | $ 2,290 | $ 37 |