Income Taxes (Tables)

6 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Abstract]

Roll-Forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties

A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows:

(in millions)	Interest and Penalties			Unrecognized Tax Benefits			Total
Opening balance at January 1, 2013	$	0.6		$	12.2		$	12.8
Additions for tax positions of prior periods		0.1			0.1			0.2
Reductions due to lapsed statutes of limitations		(0.1	)		(0.5	)		(0.6	)
Closing balance at June 30, 2013		0.6			11.8			12.4
Current		(0.1	)		(2.3	)		(2.4	)
Non-current	$	0.5		$	9.5		$	10.0