Income Taxes - Income Taxes Additional Information (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Effective income tax rate	21.70%		20.60%	20.50%	22.70%
Restructuring and other charges, net	$ 8,175,000	$ 17,000,000	$ 0	$ 25,175,000	$ 0
Restructuring and other charges, net of tax	$ 5,200,000	$ 11,100,000