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Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Costs



	Pension
	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2014				2013				2014				2013
	(in millions)
Service cost	$	0.6			$	0.7			$	2.0			$	2.6
Interest cost	1.2				1.2				4.0				3.7
Expected return on plan assets	(1.4		)		(0.9		)		(3.8		)		(2.9		)
Amortization of prior service costs ⁽¹⁾	1.1				1.2				3.6				3.7
Amortization of actuarial losses ⁽¹⁾	0.2				0.5				0.6				1.7
Curtailment cost	—				—				2.0				—
Special termination benefits	—				—				0.3				—
Periodic expense	$	1.7			$	2.7			$	8.7			$	8.8

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⁽¹⁾	Amortization of prior service costs and actuarial losses out of AOCI are recognized in the Condensed Consolidated Statements of Operations in "General and administrative."



	Postretirement Benefits
	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2014				2013				2014				2013
	(in millions)
Service cost	$	—			$	0.1			$	—			$	0.1
Interest cost	—				—				0.2				0.2
Amortization of prior service costs ⁽¹⁾	0.1				0.1				0.3				0.3
Recognized net actuarial loss	—				0.1				—				0.1
Curtailment cost	—								0.4				—
Periodic expense	$	0.1			$	0.3			$	0.9			$	0.7

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⁽¹⁾	Amortization of prior service costs out of AOCI are recognized in the Condensed Consolidated Statements of Operations in "General and administrative."