CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 30, 2011	Dec. 31, 2010
Assets
Trade accounts receivable, allowance	$ 7.4	$ 7.8
Other accounts receivable, allowance	$ 9.8	$ 12.3
Shareholders' equity:
Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares, shares authorized (in shares)	50,000,000	50,000,000
Preferred shares, shares issued (in shares)	0	0
Preferred shares, shares outstanding (in shares)	0	0
Ordinary shares, par value (in dollars per share)	$ 0.01	$ 0.01
Ordinary shares, shares authorized (in shares)	200,000,000	200,000,000
Ordinary shares, shares issued (in shares)	57,764,454	58,725,430
Ordinary shares, shares outstanding (in shares)	57,764,454	58,725,430