Retirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 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 retirement plans are as follows (in millions):

	Three Months Ended March 31,
	2015			2014
Service cost	$	7.6		$	6.7
Interest cost		5.5			6.4
Expected return on plan assets		(10.9	)		(10.4	)
Amortization of prior service cost		(1.1	)		(1.0	)
Amortization of unrecognized actuarial loss		4.3			2.9
Net periodic pension expense	$	5.4		$	4.6