Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended				12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]	Dec. 31, 2012 German Tax Authority [Member]	Jun. 30, 2013 German Tax Authority [Member]
Income Tax Disclosure [Line Items]
Estimated tax rate	39.00%	26.50%	39.00%	26.50%
Unrepatriated foreign earnings	$ 0.9		$ 0.9
Non-U.S. earnings that have been targeted for future repatriation	12.4		12.4
Open tax years					2000	2012
Estimated range of change, upper bound	0		0
Estimated range of change, lower bound	(2.5)		(2.5)
Unrecognized tax benefits								22.7
Amounts of tax benefits that would affect effective tax rate if recognized								11.6
Payment to taxing authority to pursue litigation							$ 13.0