Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 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	(2.4)
Income Tax Expense Benefit Estimated Tax Rate	40.00%	35.00%
Federal Ministry of Finance, Germany [Member]
Income Tax Disclosure [Line Items]
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