Pension and Other Benefits (Tables)

6 Months Ended

Jun. 30, 2015

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Pension and Other Benefit Costs

The following table sets forth the components of net pension and other benefit costs for the three and six months ended June 30, 2015 and 2014 (in millions):

	Pension Benefits						Other Benefits
	2015			2014			2015			2014
Three Months Ended June 30,
Service cost	$	4.5		$	3.8		$	—		$	—
Interest cost	10.1			10.2			0.3			0.4
Expected return on plan assets	(13.4		)	(11.3		)	—			—
Amortization of prior service cost	—			—			(0.3		)	(0.2		)
Amortization of actuarial losses/(gains)	3.0			0.9			—			(0.1		)
NET PERIODIC BENEFIT COST	$	4.2		$	3.6		$	—		$	0.1
Six Months Ended June 30,
Service cost	$	9.0		$	7.5		$	—		$	—
Interest cost	20.2			20.4			0.6			0.6
Expected return on plan assets	(26.6		)	(22.6		)	—			—
Amortization of prior service cost	—			0.1			(0.5		)	(0.4		)
Amortization of actuarial losses/(gains)	5.9			1.8			—			(0.1		)
NET PERIODIC BENEFIT COST	$	8.5		$	7.2		$	0.1		$	0.1