Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Unrealized Gains (Losses) on Available-for-Sale Securities, tax | $ 9 | $ (16) |
| Pension/OPEB adjustment, tax | (3) | (4) |
| PSE And G [Member] | ||
| Unrealized Gains (Losses) on Available-for-Sale Securities, tax | 0 | 1 |
| Power [Member] | ||
| Unrealized Gains (Losses) on Available-for-Sale Securities, tax | 8 | (18) |
| Pension/OPEB adjustment, tax | $ (3) | $ (4) |