Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Accounts Receivable, allowances	$ 59	$ 52
Common Stock, issued	533,556,660	533,556,660
Common Stock, authorized	1,000,000,000	1,000,000,000
Treasury Stock, Shares	28,238,912	27,720,068
PSE And G [Member]
Accounts Receivable, allowances	$ 59	$ 52
Common Stock, issued	132,450,344	132,450,344
Common Stock, outstanding	132,450,344	132,450,344
Common Stock, authorized	150,000,000	150,000,000