Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Accounts Receivable, allowances	$ 61	$ 63
Common Stock, issued	534	534
Common Stock, authorized	1,000	1,000
Treasury Stock, Shares	30	30
Public Service Electric and Gas Company [Member]
Accounts Receivable, allowances	$ 61	$ 63
Common Stock, issued	132	132
Common Stock, outstanding	132	132
Common Stock, authorized	150	150