Condensed Consolidated Statement of Changes in Shareholders' Equity Statement (USD $) In Millions, except Share data, unless otherwise specified	Total	Ordinary Shares	Treasury Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning balance at Sep. 27, 2013	$ 1,255.6	$ 11.5	$ 0	$ 1,102.1	$ 33.5	$ 108.5
Beginning balance, ordinary shares at Sep. 27, 2013	57,713,390	57,700,000
Beginning balance, treasury shares at Sep. 27, 2013	483		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33.1				33.1
Currency translation adjustments	(2.9)					(2.9)
Change in derivatives, net of tax	0.4					0.4
Minimum pension liability, net of tax	4.5					4.5
Share options exercised (in shares)		600,000
Share options exercised (in usd)	25.2	0.1		25.1
Vesting of restricted shares (in shares)		300,000
Vesting of restricted shares (in usd)	0	0.1		(0.1)
Share-based compensation	14.4			14.4
Repurchase of shares (in usd)	(1.9)		(1.9)
Ending balance at Jun. 27, 2014	$ 1,328.4	$ 11.7	$ (1.9)	$ 1,141.5	$ 66.6	$ 110.5
Ending balance, ordinary shares at Jun. 27, 2014	58,561,112	58,600,000
Ending balance, treasury shares at Jun. 27, 2014	32,861		0