Pension and Other Postemployment Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Components of net periodic expense of Pension and OPEB plans

The following table presents the components of net periodic expense (benefit) of the Company’s Pension and Other Postretirement plans:

	Pension Benefits						Other Benefits
	Three Months Ended June 30,						Three Months Ended June 30,
(in millions)	2014			2013			2014		2013
Service cost	$	0.2		$	0.5		$	—	$	—
Interest cost	1.9			1.7			—		—
Expected return on plan assets	(2.1		)	(2.1		)	—		—
Amortization of net loss (gain)	0.1			0.7			—		(3.2		)
Amortization of unrecognized prior service (credit)	—			(0.1		)	—		(0.5		)
Net periodic expense (benefit)	$	0.1		$	0.7		$	—	$	(3.7	)

	Pension Benefits						Other Benefits
	Six Months Ended June 30,						Six Months Ended June 30,
(in millions)	2014			2013			2014		2013
Service cost	$	0.5		$	1.1		$	—	$	—
Interest cost	3.6			3.4			—		—
Expected return on plan assets	(4.2		)	(4.3		)	—		—
Amortization of net loss (gain)	0.4			1.4			—		(6.4		)
Amortization of unrecognized prior service (credit)	(0.1		)	(0.1		)	—		(1.0		)
Net periodic expense (benefit)	$	0.2		$	1.5		$	—	$	(7.4	)