Discontinued Operations And Dispositions (Summary Of Carrying Amount Of Assets And Liabilities) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Total Assets of Discontinued Operations	$ 294	$ 564
Total Liabilities of Discontinued Operations	51	72
Power [Member] | PSEG Texas [Member]
Current Assets	16	28
Noncurrent Assets	278	536
Total Assets of Discontinued Operations	294	564
Current Liabilities	15	28
Noncurrent Liabilities	36	44
Total Liabilities of Discontinued Operations	51	72
Power [Member]
Total Assets of Discontinued Operations	294	564
Total Liabilities of Discontinued Operations	$ 51	$ 72