Income Taxes (Tables)

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Schedule of effective income tax rate reconciliation

The following table provides details of income taxes (in millions, except percentages):

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Income before income taxes	$	245.2		$	192.2		$	385.8		$	318.7
Income tax provision	$	65.4		$	52.2		$	97.2		$	87.3
Effective tax rate	26.7		%	27.2		%	25.2		%	27.4		%