Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2015

Retirement Plans

Components of net periodic benefit cost

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in millions)	2015			2014			2015			2014
Service cost	$	0.9		$	0.9		$	2.8		$	2.7
Interest cost	1.8			1.9			5.3			5.8
Expected return on plan assets	(2.6		)	(2.6		)	(7.8		)	(8.0		)
Amortization of unrecognized loss	1.3			1.1			3.9			3.2
Net periodic benefit cost	$	1.4		$	1.3		$	4.2		$	3.7