Retirement and Other Employee Benefits (Net Periodic Pension Cost of Defined Benefit Pension and Post-Retirement Benefit Plans) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2012		Dec. 30, 2011		Dec. 31, 2010
UNITED STATES Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	[1]	$ 0	[1]	$ 0
Interest cost	0.8	[1]	0.9	[1]	0.9
Expected return on assets	(1.0)		(1.0)		(0.9)
Net amortization	0.3		0.2		0.1
Net periodic cost (income)	0.1		0.1		0.1
Pension Plans [Member] | CENTRAL AMERICA [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic cost (income)	0.3		0.3		0.3
Pension Plans [Member] | UNITED KINGDOM [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	[1]	0	[1]	0
Interest cost	2.4	[1]	3.0	[1]	3.1
Expected return on assets	(2.5)		(2.8)		(2.4)
Net amortization	0		0		0
Net periodic cost (income)	(0.1)		0.2		0.7
Post-retirement Plans [Member] | CENTRAL AMERICA [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4.2		3.6		3.3
Interest cost	3.0		3.0		3.6
Expected return on assets	0		0		0
Net amortization	1.1		1.2		1.0
Net periodic cost (income)	$ 8.3		$ 7.8		$ 7.9

[1] The accumulated benefit obligation is the same as the projected benefit obligation.