Pension and Other Postretirement Benefit Plans

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

The components of net periodic cost are as follows:



	Three Months Ended September 30,												Nine Months Ended September 30,
(in millions)	Pension Benefits						Other Postretirement Benefits						Pension Benefits						Other Postretirement Benefits
	2015			2014			2015			2014			2015			2014			2015			2014
Service cost	$	1.4		$	1.3		$	—		$	—		$	4.0		$	3.8		$	—		$	0.1
Interest cost	9.5			10.2			0.1			0.1			28.6			30.7			0.3			0.3
Expected return on plan assets	(15.7		)	(15.7		)	—			—			(46.9		)	(47.1		)	—			—
Amortization of prior service cost	(0.1		)	—			(0.1		)	(0.1		)	(0.2		)	0.1			(0.2		)	(0.2		)
Amortization of net loss (gain)	3.1			1.3			—			—			9.3			3.8			(0.2		)	(0.1		)
Curtailment gain *	(4.4		)	—			—			—			(4.4		)	—			—			—
Net periodic cost	$	(6.2	)	$	(2.9	)	$	—		$	—		$	(9.6	)	$	(8.8	)	$	(0.1	)	$	—

* See additional discussion in Notes 5 and 14.

The Company expects, based on current actuarial calculations, to contribute approximately $17.0 million to its defined benefit plans and $1.0 million to its other postretirement benefit plans in 2015, of which $15.2 million and $0.2 million have been contributed during the first nine months of 2015, respectively. The Company contributed $24.5 million to its defined benefit plans and $1.0 million to its other postretirement benefit plans in 2014. Cash contributions for subsequent years will depend on a number of factors, including the impact of the Pension Protection Act signed into law in 2006, changes in minimum funding requirements, long-term interest rates, the investment performance of plan assets and changes in employee census data affecting the Company’s projected benefit obligations.