CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions, except Share data, unless otherwise specified	Total	Ordinary Shares	Paid-in Capital	Retained Earnings	Treasury Shares	Accumulated Other Comprehensive Income (Loss)	Total Shareholders' Equity	Non-Controlling Interests [Member]
Balance, value at Dec. 26, 2008	$ 1,513.9	$ 0.6	$ 549.8	$ 964.6	$ 0	$ (18.1)	$ 1,496.9	$ 17.0
Balance, shares at Dec. 26, 2008		63,553,211
Exercises of stock options, shares		62,200
Exercises of stock options, value	1.0		1.0				1.0
Share-based payment expense	10.4		10.4				10.4
Excess tax benefit from stock-based compensation	0
Capital contribution from non-controlling interest	3.7							3.7
Comprehensive income:
Net income	144.6			143.9			143.9	0.7
Unrealized gain on derivatives	13.4					13.4	13.4
Net foreign currency translation adjustment	21.2					20.5	20.5	0.7
Change in retirement benefit adjustment	(13.0)					(13.0)	(13.0)
Comprehensive income	166.2						164.8	1.4
Balance, value at Jan. 01, 2010	1,695.2	0.6	561.2	1,108.5	0	2.8	1,673.1	22.1
Balance, shares at Jan. 01, 2010		63,615,411
Exercises of stock options, shares		135,722
Exercises of stock options, value	2.3		2.3				2.3
Issuance of restricted stock awards	32,956	32,956
Share-based payment expense	7.5		7.5				7.5
Excess tax benefit from stock-based compensation	0
Capital contribution from non-controlling interest	2.7							2.7
Treasury shares purchased, shares	(5,058,659)	(5,058,659)
Treasury shares purchased, value	(108.1)				(108.1)		(108.1)
Treasury shares retired			(108.1)		108.1
Dividend declared	(2.9)			(2.9)			(2.9)
Comprehensive income:
Net income	60.8			62.2			62.2	(1.4)
Unrealized gain on derivatives	(39.1)					(39.1)	(39.1)
Net foreign currency translation adjustment	10.9					10.0	10.0	0.9
Change in retirement benefit adjustment	2.2					2.2	2.2
Comprehensive income	34.8						35.3	(0.5)
Balance, value at Dec. 31, 2010	1,631.5	0.6	462.9	1,167.8	0	(24.1)	1,607.2	24.3
Balance, shares at Dec. 31, 2010	58,725,430	58,725,430
Exercises of stock options, shares		1,166,849
Exercises of stock options, value	22.8		22.8				22.8
Issuance of restricted stock awards	27,853	27,853
Share-based payment expense	9.2		9.2				9.2
Excess tax benefit from stock-based compensation	2.9		2.9				2.9
Capital contribution from non-controlling interest	(0.9)							(0.9)
Treasury shares purchased, shares	(2,155,678)	(2,155,678)
Treasury shares purchased, value	(50.0)			0	(50.0)		(50.0)	0
Treasury shares retired			(14.2)	(35.8)	50.0
Dividend declared	(17.7)			(17.7)			(17.7)	0
Comprehensive income:
Net income	94.8			92.5			92.5	2.3
Unrealized gain on derivatives	26.3					26.3	26.3
Net foreign currency translation adjustment	(2.5)					(2.5)	(2.5)	0
Change in retirement benefit adjustment	(1.3)					(1.3)	(1.3)
Comprehensive income	117.3						115.0	2.3
Balance, value at Dec. 30, 2011	$ 1,715.1	$ 0.6	$ 483.6	$ 1,206.8	$ 0	$ (1.6)	$ 1,689.4	$ 25.7
Balance, shares at Dec. 30, 2011	57,764,454	57,764,454