Income Taxes (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Line Items]
Unrepatriated foreign earnings	$ 3.7
Estimated range of change, upper bound	8.8
Estimated range of change, lower bound	$ 2.5
Income Tax Expense Benefit Estimated Tax Rate	43.50%	36.50%
Federal Ministry of Finance, Germany [Member]
Income Tax Disclosure [Line Items]
Estimated range of change, upper bound	$ 8.8
Payment to taxing authority to pursue litigation	14.5
Unrecognized Tax Benefits	25.3
Adjustment of certain deferred tax assets	6.3
Scenario, Plan [Member]
Income Tax Disclosure [Line Items]
Foreign Earnings Repatriated	$ 59.4
Earliest Tax Year [Member]
Income Tax Disclosure [Line Items]
Open tax years	2000
Latest Tax Year [Member]
Income Tax Disclosure [Line Items]
Open tax years	2014