Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Accounts Receivable, allowance	$ 154	$ 60
Unbilled Revenues, allowance	$ 4
Common Stock, authorized	1,000	1,000
Common Stock, issued	534	534
Treasury Stock, Shares	30	30
Public Service Electric and Gas Company [Member]
Accounts Receivable, allowance	$ 154	$ 60
Unbilled Revenues, allowance	$ 4
Common Stock, authorized	150	150
Common Stock, issued	132	132
Common Stock, outstanding	132	132