DEFINED BENEFIT RETIREMENT PLAN (Details)	12 Months Ended
	Dec. 29, 2012 USD ($) Y	Dec. 29, 2012 GBP (£)	Dec. 31, 2011 USD ($)	Dec. 31, 2011 GBP (£)	Dec. 25, 2010 USD ($)
DEFINED BENEFIT RETIREMENT PLAN
Pension retirement benefits to qualified employees as percent of final salary per year of service	1.67%	1.67%
Eligibility age (in years)	65	65
Foreign currency exchange rate used to translate the net pension liability		£ 1.6121		£ 1.5425
Change in Projected Benefit Obligation
Beginning balance	492,519,000		463,807,000
Interest cost	23,445,000		25,643,000
Benefits paid	(11,722,000)		(11,539,000)
Actuarial loss	69,859,000		16,187,000
Currency translation	23,666,000		(1,579,000)
Ending balance	597,767,000		492,519,000
Plan Assets
Fair value beginning balance	424,495,000		359,636,000
Employer contributions	11,591,000		11,860,000
Actual return on plan assets	41,345,000		67,474,000
Benefits paid	(11,722,000)		(11,539,000)
Currency translation	20,015,000		(2,936,000)
Fair Value ending balance	485,724,000		424,495,000
Funded status
Funded status	(112,043,000)		(68,024,000)		(104,171,000)
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	60,014,000		28,952,000
Acturial gain	(48,524,000)		31,093,000
Currency translation loss	1,127,000		(31,000)
Balance at the end of the period	12,617,000		60,014,000
The estimated amount to be amortized from accumulated other comprehensive income into net periodic benefit cost in 2013	0
Weighted average actuarial assumptions used to determine the benefit obligation
Discount rate (as a percent)	4.60%	4.60%	4.80%
Inflation (as a percent)	2.70%	2.70%	2.30%
Net Periodic Benefit Cost:
Interest cost	23,445,000		25,643,000
Expected return on plan assets	(19,168,000)		(20,194,000)
Net periodic benefit expense	4,277,000		5,449,000
Weighted average actuarial assumptions used to determine expense
Discount rate (as a percent)	4.80%	4.80%	5.50%
Expected return on plan assets (as a percent)	4.40%	4.40%	5.40%
Inflation (as a percent)	3.20%	3.20%	3.50%
Limit on employer contributions per annum	16,121,000	10,000,000
Administrative costs of the Plan	1,612,000	1,000,000
Expected pension benefit payments
2013	12,413,000
2014	12,736,000
2015	13,058,000
2016	13,380,000
2017	13,703,000
2018-2021	$ 73,512,000
Weighted average maturity period of debt portfolio (in years)	12	12