Income Taxes (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations	29.50%	26.30%
Tax benefits related to restructuring expense	$ 10.5
Tax benefit of project termination settlement		3.8
Tax benefit associated with retirement obligations		2.1
Other Tax Adjustments		1.7
Tax benefit of research and development and international tax credit extensions		6.6
Tax impact of other tax adjustments		$ 4.9