Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Beginning and Ending amount of Unrecognized tax benefits
Unrecognized Tax Benefit January 1	$ 6.1	$ 6.0	$ 6.2
Gross Increases - Tax Positions in Prior Period	0.4	0.1	0
Gross Decreases - Tax Positions in Prior Period	(0.6)	0	(0.1)
Gross Increases - Tax Positions in Current Period	0	0.1	0.1
Settlements	0	0	0
Lapse of Statute of Limitations	0	(0.1)	(0.2)
Unrecognized Tax Benefit - December 31	$ 5.9	$ 6.1	$ 6.0