Retirement Benefit Plans

9 Months Ended

Sep. 30, 2011

Retirement Benefit Plans [Abstract]

Retirement Benefit Plans

11. Retirement Benefit Plans

We have defined benefit pension plans covering certain U.S. and Puerto Rico employees. The employees who are not participating in the defined benefit plans receive additional benefits under our defined contribution plans. Plan benefits are primarily based on years of credited service and the participant’s compensation. In addition to the U.S. and Puerto Rico defined benefit pension plans, we sponsor various non-U.S. pension arrangements, including retirement and termination benefit plans required by local law or coordinated with government sponsored plans.

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 September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Service cost	$	7.4		$	6.4		$	21.5		$	18.9
Interest cost		5.2			4.5			15.4			13.5
Expected return on plan assets		(8.1	)		(6.5	)		(23.9	)		(19.4	)
Amortization of prior service cost		(0.3	)		(0.2	)		(0.7	)		(0.6	)
Amortization of unrecognized actuarial loss		1.9			0.8			5.6			2.5
Net periodic benefit cost	$	6.1		$	5.0		$	17.9		$	14.9

We contributed $36.5 million during the nine month period ended September 30, 2011 to our U.S. and Puerto Rico defined benefit plans and do not expect to contribute additional funds to these plans during the remainder of 2011. We contributed $12.1 million to our foreign-based defined benefit plans in the nine month period ended September 30, 2011 and expect to contribute $4.1 million to these foreign-based plans during the remainder of 2011.