Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Tax Contingency [Line Items]
Effective tax rate	40.90%	41.00%	40.20%	42.70%
Income tax benefit related to expiration of statute of limitations for uncertain tax positions			$ 0.1
Reduction in effective income tax rate due to expiration of statute of limitations for uncertain tax positions			0.50%
Total gross amount of unrecognized tax benefits that would impact effective tax rate	1.7		1.7
Potential impact on total gross amount of unrecognized tax benefits due to expiration of statute of limitations	$ 0.1		$ 0.1
FCGC [Member]
Income Tax Contingency [Line Items]
Increase in effective income tax rate due to non-deductible transaction costs related to acquistion		1.00%		2.50%