Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	$ (13)	$ 9
Unrealized Gains (Losses) on Cash Flow Hedges, Tax	1	0
Pension/OPEB adjustment, tax	(4)	(3)
PSE And G [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	0	0
Power [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	(11)	8
Pension/OPEB adjustment, tax	$ (4)	$ (3)

Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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