Transactions With Affiliated Companies (Details) (FES, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investment Income:
Interest income from FE	$ 2	$ 2	$ 2
Interest Expense:
Interest expense to affiliates	4	10	8
Interest expense to FE	6	1	1
Electric sales to affiliates
REVENUES:
Related Party Transaction, Revenues from Transactions with Related Party	652	515	752
Other
REVENUES:
Related Party Transaction, Revenues from Transactions with Related Party	6	16	80
Purchased power from affiliates
EXPENSES:
Related Party Transaction, Expenses from Transactions with Related Party	486	451	242
Fuel
EXPENSES:
Related Party Transaction, Expenses from Transactions with Related Party	0	2	37
Support services
EXPENSES:
Related Party Transaction, Expenses from Transactions with Related Party	$ 619	$ 570	$ 655