Shareholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended							3 Months Ended
	Mar. 14, 2012	Feb. 29, 2012	Aug. 03, 2011	May 04, 2011	Mar. 16, 2011	Mar. 03, 2011	Jul. 31, 2009	Mar. 30, 2012	Dec. 30, 2011	Apr. 01, 2011	Jul. 02, 2010
Class of Stock [Line Items]
Preferred shares, shares authorized								50,000,000	50,000,000
Preferred shares, par value								$ 0.01	$ 0.01
Ordinary shares, authorized								200,000,000	200,000,000
Ordinary shares, par value								$ 0.01	$ 0.01
Ordinary shares, issued								57,832,277	57,764,454
Stock repurchase program, value of ordinary shares repurchased and retired								$ 158
Stock repurchase program, ordinary shares repurchased and retired								7,214,337
Total stock repurchase program, authorized repurchase amount								300.0
Common stock repurchase program, maximum remaining amount								142.0
Ordinary shares issued/ (retired) as a result of:
Stock option exercises								40,250		413,776
Restricted share grants								27,573		27,853
Stock repurchase program, ordinary shares authorized							150				150
Dividends:
Dividends declared per ordinary share		$ 0.10	$ 0.10	$ 0.05		$ 0.05		$ 0.10	$ 0.10	$ 0.05
Dividends Payable, Date of Record, Day, Month and Year	Mar. 14, 2012				Mar. 16, 2011
Dividend Declared Date		Feb. 29, 2012				Mar. 03, 2011
Payments of dividends, common stock								$ 5.8		$ 0