Securities Sold Under Agreements To Repurchase (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments, Debt and Equity Securities [Abstract]
Securities sold under agreements to repurchase average	$ 177.9	$ 142.4	$ 113.1
Securities sold under agreements to repurchase maximum outstanding	$ 233.8	$ 166.3	$ 148.2