Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable, allowances	$ 196	$ 60
Unbilled Revenues, allowance for credit losses	$ 10
Common Stock, issued	534,000,000	534,000,000
Common Stock, authorized	1,000,000,000	1,000,000,000
Treasury Stock, Shares	30,000,000	30,000,000
Public Service Electric and Gas Company
Accounts Receivable, allowances	$ 196	$ 60
Unbilled Revenues, allowance for credit losses	$ 10
Common Stock, issued	132,000,000	132,000,000
Common Stock, authorized	150,000,000	150,000,000