Retirement and Other Employee Benefits (Tables)

3 Months Ended

Mar. 30, 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
	March 30, 2018			March 31, 2017
Service cost	$	1.5		$	1.4
Interest cost	1.6			1.6
Expected return on assets	(0.9		)	(0.8		)
Amortization of net actuarial loss	0.2			0.3
Net periodic benefit costs	$	2.4		$	2.5