Related Party (Cost Allocation Agreements with Affiliates) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transactions [Abstract]
Allocated Lease Expense	$ 10	$ 4	$ 4
Allocated Sub-Lease Rental Income	4	4	2
Commissions and Fees Paid to PAD	$ 172	$ 186	$ 185