Retirement and Other Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2017

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
	March 31, 2017			April 1, 2016
Service cost	$	1.4		$	1.3
Interest cost	1.6			1.7
Expected return on assets	(0.8		)	(1.0		)
Amortization of net actuarial loss	0.3			0.3
Net periodic benefit costs	$	2.5		$	2.3