Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2013

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 September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Service cost	$	7.0		$	6.2		$	21.1		$	19.1
Interest cost		4.7			4.6			14.1			14.2
Expected return on plan assets		(8.9	)		(8.2	)		(26.7	)		(24.7	)
Settlement		—			—			—			0.7
Amortization of prior service cost		(1.0	)		(1.3	)		(2.9	)		(2.7	)
Amortization of unrecognized actuarial loss		4.7			3.2			14.0			9.9
Net periodic pension expense	$	6.5		$	4.5		$	19.6		$	16.5