Income Taxes (Tables)

9 Months Ended

Sep. 30, 2011

Income Taxes [Abstract]

Schedule of income taxes

Income taxes included in our interim consolidated statements of income are as follows (in millions, except percentages):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Income tax (benefit) expense	$	(9.9	)	$	4.7		$	(11.4	)	$	29.1
Effective tax rate		39.8	%		35.4	%		38.4	%		36.1	%