Background and Basis of Presentation (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 25, 2015 USD ($) $ / shares shares	Sep. 26, 2014 USD ($)	Sep. 30, 2016 $ / shares shares	Jun. 28, 2013
Schedule of Basis of Presentation [Line Items]
Distribution ratio			0.125	0.125
Stock outstanding after distribution (in shares) | shares	116,283,149		107,167,693
Ordinary shares, par value (in usd per share) | $ / shares	$ 0.20		$ 0.20
Operating Expense [Member]
Schedule of Basis of Presentation [Line Items]
Prior Period Reclassification Adjustment | $	$ 56.4	$ 22.5