Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Deferred tax assets, tax credit carryforwards	$ 3.7
Utilization of net operating losses	23.8
Accumulated undistributed earnings of non-U.S. corporate subsidiaries	5.4
Additional taxes to be provided if undistributed foreign earnings are remitted	2.1
Federal
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, net operating losses	28.8
Net operating losses	82.4
Reduction of net operating losses	31.0
Reduction of net operating losses, tax	10.8
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, net operating losses	$ 82.4