Taxes (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net interest expense (income) and cumulative net interest payable (receivable)
Net Interest Expense (Income)	$ (4)	$ (5)	$ (10)
Net Interest Payable	8	11
FES
Net interest expense (income) and cumulative net interest payable (receivable)
Net Interest Expense (Income)	(4)	1	1
Net Interest Payable	0	4
OE
Net interest expense (income) and cumulative net interest payable (receivable)
Net Interest Expense (Income)	(1)	(2)	(3)
Net Interest Payable	0	1
JCP&L
Net interest expense (income) and cumulative net interest payable (receivable)
Net Interest Expense (Income)	0	0	(2)
Net Interest Payable	$ 0	$ 0