Income Taxes (Reconciliation Of Unrecognized Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefit at January 1	$ 6	$ 6
No Activity	0	0
Unrecognized Tax Benefit at December 31	6	6
AA [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefit at January 1	5	5
No Activity	0	0
Unrecognized Tax Benefit at December 31	$ 5	$ 5