Retirement and Other Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Net periodic benefit costs of pension plans and post-retirement plans

The following table sets forth the net periodic benefit costs of our pension plans and post-retirement plans (U.S. dollars in millions):

	Quarter ended						Nine months ended
	September 30, 2016			September 25, 2015			September 30, 2016			September 25, 2015
Service cost	$	1.3		$	1.4		$	3.9		$	4.3
Interest cost	1.7			1.7			4.9			5.0
Expected return on assets	(1.0		)	(1.0		)	(2.8		)	(2.9		)
Amortization of net actuarial loss	0.3			0.4			0.9			1.2
Net periodic benefit costs	$	2.3		$	2.5		$	6.9		$	7.6