Goodwill and Other Intangible Assets (Amortization Expense on Existing Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 128.0	$ 169.0
Future amortization expense to be recognized during remainder of 2013	115
Future amortization expense to be recognized during 2014	202
Future amortization expense to be recognized during 2015	179
Future amortization expense to be recognized during 2016	161
Future amortization expense to be recognized during 2017	140
Future amortization expense to be recognized during 2018	123
Other Loans [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 0.5	$ 1.0