Retirement and Other Employee Benefits (Roll Forward of AOCI Balances) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Net (losses) gains occuring during the year	$ 3.3		$ 4.8
CENTRAL AMERICA [Member]
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Net (losses) gains occuring during the year	0.9		0.6		0.9
UNITED STATES Pension Plans [Member]
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
AOCI (loss) gain at beginning of plan year	(9.7)	[1]	(9.0)
Net losses (gains) recognized during the year	0.4		0.3
Net (losses) gains occuring during the year	2.1		(1.0)
Currency exchange rate changes	0		0
AOCI gain (loss) at end of plan year	(7.2)	[1]	(9.7)	[1]
Pension Plans [Member]
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Net (losses) gains occuring during the year	(3.7)		(4.1)
Pension Plans [Member] | UNITED KINGDOM [Member]
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
AOCI (loss) gain at beginning of plan year	2.8	[1]	5.9
Net losses (gains) recognized during the year	0		0.4
Net (losses) gains occuring during the year	4.4		(3.3)
Currency exchange rate changes	0		(0.2)
AOCI gain (loss) at end of plan year	7.2	[1]	2.8	[1]
Post-retirement Plans [Member] | CENTRAL AMERICA [Member]
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
AOCI (loss) gain at beginning of plan year	(20.4)		(13.8)
Net losses (gains) recognized during the year	1.6		0.4
Net (losses) gains occuring during the year	5.1		(6.9)
Currency exchange rate changes	(0.3)		(0.1)
AOCI gain (loss) at end of plan year	$ (14.0)		$ (20.4)

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