Retirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Retirement Benefit Plans [Abstract]

Components of net pension expense

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

	Three Months Ended March  31,
	2012			2011
Service cost	$	6.8		$	6.9
Interest cost		5.0			5.0
Expected return on plan assets		(8.3	)		(7.8	)
Amortization of prior service cost		(0.2	)		(0.2	)
Amortization of unrecognized actuarial loss		3.4			1.9
Net periodic benefit cost	$	6.7		$	5.8