Pension and Other Postemployment Benefit Plans (Tables)

9 Months Ended

Sep. 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 September 30,						Three Months Ended September 30,
(in millions)	2014			2013			2014		2013
Service cost	$	0.2		$	0.6		$	—	$	—
Interest cost	1.7			1.7			—		—
Expected return on plan assets	(2.1		)	(2.2		)	—		—
Amortization of net loss (gain)	0.2			0.6			—		(3.2		)
Amortization of unrecognized prior service (credit)	—			—			—		(0.5		)
Net periodic expense (benefit)	$	—		$	0.7		$	—	$	(3.7	)

	Pension Benefits						Other Benefits
	Nine Months Ended September 30,						Nine Months Ended September 30,
(in millions)	2014			2013			2014		2013
Service cost	$	0.7		$	1.7		$	—	$	—
Interest cost	5.3			5.1			—		—
Expected return on plan assets	(6.3		)	(6.5		)	—		—
Amortization of net loss (gain)	0.6			2.0			—		(9.6		)
Amortization of unrecognized prior service (credit)	(0.1		)	(0.1		)	—		(1.5		)
Net periodic expense (benefit)	$	0.2		$	2.2		$	—	$	(11.1	)