Retirement and Other Employee Benefits (Net Periodic Pension Cost of Defined Benefit Pension and Post-Retirement Benefit Plans) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1.1	$ 0.9	$ 3.2	$ 2.7
Interest cost	1.6	1.7	4.7	5.2
Expected return on assets	(0.9)	(1.0)	(2.6)	(2.9)
Amortization of net actuarial loss	0.3	0.4	1.0	1.1
Net periodic benefit costs	$ 2.1	$ 2.0	$ 6.3	$ 6.1