Available-For-Sale Securities (Fair Value Of Rabbi Trust) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Total Available-for-Sale Securities	$ 172	$ 160
Power [Member]
Total Available-for-Sale Securities	33	32
PSE&G [Member]
Total Available-for-Sale Securities	57	54
Other [Member]
Total Available-for-Sale Securities	$ 82	$ 74

For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading.

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+ Details