Income Taxes (Tables)

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Income taxes

The Company's provision for income taxes in interim periods is computed by applying the appropriate annual effective tax rates to income or loss before income taxes for the period. In addition, non-recurring or discrete items, including interest on prior year tax liabilities, are recorded during the period(s) in which they occur.

	Three Months Ended March 31,
	2013			2012
Provision for income taxes	$	38.8		$	81.5
Effective tax rate	34.1		%	34.3		%