Income Taxes (Tables)

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Schedule of effective income tax rate reconciliation

The effective tax rate for the three and nine months ended September 30, 2013 includes the effect of the following discrete items (in millions):

	Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
Section 199 deduction	$	(0.6	)	$	19.7
Tax settlement with Internal Revenue Service (“IRS”)	$	—		$	27.8
Reinstatement of the U.S. federal R&D tax credit	$	1.0		$	16.2