Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts Receivable,allowances	$ 52	$ 56
Common Stock, issued	533,556,660us-gaap_CommonStockSharesIssued	533,556,660us-gaap_CommonStockSharesIssued
Common Stock, authorized	1,000,000,000us-gaap_CommonStockSharesAuthorized	1,000,000,000us-gaap_CommonStockSharesAuthorized
Treasury Stock, Shares	27,720,068us-gaap_TreasuryStockShares	27,699,398us-gaap_TreasuryStockShares
PSE&G [Member]
Accounts Receivable,allowances	$ 52	$ 56
Common Stock, issued	132,450,344	132,450,344
Common Stock, authorized	150,000,000	150,000,000

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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