Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Components of Net Pension Expense

The components of net periodic pension expense for our U.S. and foreign defined benefit pension plans are as follows (in millions):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Service cost	$	7.6		$	6.3		$	22.8		$	19.0
Interest cost		7.2			6.1			18.3			18.4
Expected return on plan assets		(12.3	)		(10.1	)		(34.1	)		(30.4	)
Amortization of prior service cost		(1.1	)		(1.0	)		(3.4	)		(2.9	)
Amortization of unrecognized actuarial loss		5.0			2.9			13.5			8.6
Net periodic pension expense	$	6.4		$	4.2		$	17.1		$	12.7