Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit cost recorded in the Condensed Consolidated Statements of Operations are as follows:

	Pension benefits												Other post employment benefits
(millions of dollars)	2012						2011						2012			2011
Three Months Ended September 30,	US			Non-US			US			Non-US
Service cost	$	—		$	2.2		$	—		$	2.7		$	0.1		$	0.2
Interest cost	3.6			4.2			4.0			4.3			2.5			2.9
Expected return on plan assets	(4.7		)	(2.3		)	(5.2		)	(2.8		)	—			—
Amortization of unrecognized prior service benefit	(0.2		)	—			(0.2		)	—			(1.6		)	(1.7		)
Amortization of unrecognized loss	2.0			0.4			1.7			0.2			1.8			2.0
Net periodic benefit cost	$	0.7		$	4.5		$	0.3		$	4.4		$	2.8		$	3.4

	Pension benefits												Other post employment benefits
(millions of dollars)	2012						2011						2012			2011
Nine Months Ended September 30,	US			Non-US			US			Non-US
Service cost	$	—		$	6.8		$	—		$	7.9		$	0.4		$	0.5
Interest cost	10.8			12.9			12.1			13.3			7.6			8.8
Expected return on plan assets	(14.1		)	(6.9		)	(15.6		)	(8.5		)	—			—
Amortization of unrecognized prior service benefit	(0.6		)	—			(0.6		)	—			(4.8		)	(5.1		)
Amortization of unrecognized loss	6.1			0.9			4.9			0.6			5.2			6.0
Net periodic benefit cost	$	2.2		$	13.7		$	0.8		$	13.3		$	8.4		$	10.2