Condensed Consolidated Statement of Changes in Shareholders' Equity Statement - 3 months ended Dec. 30, 2016 - USD ($) $ in Millions	Total	Ordinary Shares	Treasury Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance, ordinary shares (in shares) at Sep. 30, 2016	118,137,297	118,100,000
Beginning balance, treasury shares (in shares) at Sep. 30, 2016	10,969,604		11,000,000
Beginning balance at Sep. 30, 2016	$ 5,270.7	$ 23.6	$ (762.6)	$ 5,412.7	$ 682.6	$ (85.6)
Net income	(153.2)				(153.2)
Currency translation adjustments	(21.1)					(21.1)
Change in derivatives, net of tax	0.2					0.2
Minimum pension liability, net of tax	34.0					34.0
Share options exercised (in shares)		100,000
Share options exercised (in usd)	0.4	$ 0.0		0.4
Excess tax benefit from share-based compensation	(0.1)			(0.1)
Share-based compensation	11.0			11.0
Stock Issued During Period, Value, Treasury Stock Reissued	1.2		$ 1.6		0.4
Repurchase of shares (in shares)			2,500,000
Repurchase of shares (in usd)	$ (158.8)		$ (158.8)
Ending balance, ordinary shares (in shares) at Dec. 30, 2016	118,182,944	118,200,000
Ending balance, treasury shares (in shares) at Dec. 30, 2016	13,515,399		13,500,000
Ending balance at Dec. 30, 2016	$ 4,984.3	$ 23.6	$ (919.8)	$ 5,424.0	$ 529.0	$ (72.5)