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
	Mar. 31, 2017	Apr. 01, 2016
United States Pension Plan
Defined Benefit Plan Disclosure [Line Items]
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
non-US based plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit costs	$ 0.5	$ 0.6