Retirement and Other Employee Benefits (Tables)

9 Months Ended

Sep. 28, 2018

Retirement Benefits [Abstract]

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

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

	Quarter ended						Nine months ended
	September 28, 2018			September 29, 2017			September 28, 2018			September 29, 2017
Service cost	$	1.5		$	1.4		$	4.5		$	4.2
Interest cost	1.6			1.6			4.8			4.7
Expected return on assets	(0.9		)	(0.8		)	(2.7		)	(2.5		)
Amortization of net actuarial loss	0.2			0.3			0.6			0.9
Net periodic benefit costs	$	2.4		$	2.5		$	7.2		$	7.3