Retirement and Other Employee Benefits (Net Periodic Pension Cost of Defined Benefit Pension and Post-Retirement Benefit Plans) (Detail) (USD $)	12 Months Ended
	Dec. 26, 2014		Dec. 27, 2013		Dec. 28, 2012
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Period Increase (Decrease)	$ 0
UNITED STATES Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	[1]	0	[1]	0
Interest cost	700,000	[1]	700,000	[1]	800,000
Expected return on assets	(900,000)		(1,000,000)		(1,000,000)
Net amortization	300,000		400,000		300,000
Net periodic cost (income)	100,000		100,000		100,000
Pension Plans [Member] | CENTRAL AMERICA [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic cost (income)	300,000		300,000		300,000
Pension Plans [Member] | UNITED KINGDOM [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	[1]	0	[1]	0
Interest cost	2,700,000	[1]	2,300,000	[1]	2,400,000
Expected return on assets	(3,500,000)		(2,400,000)		(2,500,000)
Net amortization	(100,000)		0		0
Net periodic cost (income)	(900,000)		(100,000)		(100,000)
Post-retirement Plans [Member] | CENTRAL AMERICA [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	5,200,000		5,500,000		4,200,000
Interest cost	3,600,000		3,300,000		3,000,000
Expected return on assets	0		0		0
Net amortization	900,000		1,600,000		1,100,000
Net periodic cost (income)	$ 9,700,000		$ 10,400,000		$ 8,300,000

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