Related Party (Cost Allocation Agreements with Affiliates) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Related Party Transactions [Abstract]
Allocated Lease Expense	$ 0.7	$ 1.0	$ 1.0	$ 2.0
Allocated Sub-Lease Rental Income	0.2	0.6	0.5	1.0
Commissions and Fees Paid to PAD	$ 45	$ 43	$ 90	$ 85