Employee Benefit Plans (Assets Held In Trust) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets held-in-trust	$ 42.6	$ 42.6
Corporate-Owned Life Insurance Policies [Member]
Assets held-in-trust	42.7	41.9
Cash and Cash Equivalents [Member]
Assets held-in-trust	$ (0.1)	$ 0.7