Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Components of Net Pension Expense

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Service cost	$	6.2		$	7.4		$	19.1		$	21.5
Interest cost		4.6			5.2			14.2			15.4
Expected return on plan assets		(8.2	)		(8.1	)		(24.7	)		(23.9	)
Settlement		—			—			0.7			—
Amortization of prior service cost		(1.3	)		(0.3	)		(2.7	)		(0.7	)
Amortization of unrecognized actuarial loss		3.2			1.9			9.9			5.6
Net periodic benefit cost	$	4.5		$	6.1		$	16.5		$	17.9