Retirement and Other Employee Benefits - Net Periodic Pension Cost of Defined Benefit Pension and Post-Retirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2016	Mar. 27, 2015
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1.3	$ 1.4
Interest cost	1.7	1.7
Expected return on assets	(1.0)	(1.0)
Amortization of net actuarial loss	0.3	0.4
Net periodic benefit costs	2.3	2.5
non-US based plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit costs	$ 0.6	$ 0.6