Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 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 June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Service cost	$	7.6		$	6.0		$	15.2		$	12.7
Interest cost		5.6			5.9			11.1			12.3
Expected return on plan assets		(10.9	)		(9.9	)		(21.8	)		(20.3	)
Amortization of prior service cost		(1.2	)		(0.9	)		(2.3	)		(1.9	)
Amortization of unrecognized actuarial loss		4.2			2.8			8.5			5.7
Net periodic pension expense	$	5.3		$	3.9		$	10.7		$	8.5