Shareholders' Equity (Detail) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended							3 Months Ended								12 Months Ended
	Nov. 02, 2011	Aug. 03, 2011	May 04, 2011	Mar. 03, 2011	Nov. 03, 2010	May 05, 2010 Years	Jul. 31, 2009 Years	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2010	Oct. 01, 2010	Jul. 02, 2010	Apr. 02, 2010	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Class of Stock [Line Items]
Preferred shares, shares authorized								50,000,000				50,000,000				50,000,000	50,000,000
Preferred Stock, Par or Stated Value Per Share								$ 0.01				$ 0.01				$ 0.01	$ 0.01
Preferred shares, issued								0				0				0	0
Preferred shares, outstanding								0				0				0	0
Ordinary shares, authorized								200,000,000				200,000,000				200,000,000	200,000,000
Ordinary shares, par value								$ 0.01				$ 0.01				$ 0.01	$ 0.01
Ordinary shares, issued								57,764,454				58,725,430				57,764,454	58,725,430
Ordinary shares, outstanding								57,764,454				58,725,430				57,764,454	58,725,430
Stock repurchase program, ordinary shares repurchased and retired								7,214,337								7,214,337
Stock repurchase program, value of ordinary shares repurchased and retired								$ 158								$ 158
Total stock repurchase program, authorized repurchase amount								300								300
Common stock repurchase program, maximum remaining amount																142
Ordinary shares issued/ (retired) as a result of:
Stock option exercises																1,166,849	135,722	62,200
Restricted share grants																27,853	32,956
Treasury share retirement																2,155,678	5,058,659
Stock repurchase program, minority unit, period (years)						3	3
Stock repurchase program, ordinary shares authorized						150	150
Stock Repurchase Program:
Stock repurchase program, ordinary shares repurchased								318,982				1,338,359				2,155,678	5,058,659
Stock repurchase program, ordinary shares value								7.4				29.2				50.0	108.1
Stock repurchase program, average purchase price								$ 23.07				$ 21.83				$ 23.16	$ 21.36
Dividends:
Dividends declared per ordinary share	$ 0.10	$ 0.10	$ 0.05	$ 0.05	$ 0.05			$ 0.10	$ 0.10	$ 0.05	$ 0.05	$ 0.05	$ 0.00	$ 0.00	$ 0.00	$ 0.30	$ 0.05	$ 0.00
Dividends Declared Date	Nov. 02, 2011	Aug. 03, 2011	May 04, 2011	Mar. 03, 2011	Nov. 03, 2010
Payments of dividends, common stock								$ 5.8				$ 0				$ 17.7	$ 2.9	$ 0