Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Accounts Receivable, allowances	$ 56		$ 68
Long-Term Debt, fair value	50
Common Stock, no par value
Common Stock, authorized	1,000,000,000		1,000,000,000
Common Stock, issued	533,556,660		533,556,660
Common Stock, outstanding	505,945,286	[1]	505,974,223	[1]
Treasury Stock, shares	27,611,374		27,582,437
PSE&G [Member]
Accounts Receivable, allowances	$ 56		$ 67
Common Stock, authorized	150,000,000		150,000,000
Common Stock, issued	132,450,344		132,450,344
Common Stock, outstanding	132,450,344		132,450,344

[1] PSEG did not issue any new shares under the Dividend Reinvestment and Stock Purchase Plan (DRASPP) and the Employee Stock Purchase Plan (ESPP) in 2011 or 2010. Total authorized and unissued shares of common stock available for issuance through PSEG's DRASPP, ESPP and various employee benefit plans amounted to 7.0 million shares as of December 31, 2011.