Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Accounts Receivable, allowances	$ 59	$ 59
Common Stock, issued	534	534
Common Stock, authorized	1,000	1,000
Treasury Stock, Shares	30	29
PSE And G [Member]
Accounts Receivable, allowances	$ 59	$ 59
Common Stock, issued	132	132
Common Stock, outstanding	132	132
Common Stock, authorized	150	150