Equity (Details) - USD ($) shares in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Jun. 24, 2016	Sep. 25, 2015	Mar. 16, 2016	Nov. 19, 2015	Jan. 23, 2015
January 2015 Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount					$ 300.0
Stock Repurchased During Period, Shares	3,199,279	823,592
Stock Repurchased During Period, Value	$ 225.0	$ 75.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 0.0
November 2015 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount				$ 500.0
Stock Repurchased During Period, Shares	5,831,158	0
Stock Repurchased During Period, Value	$ 375.3	$ 0.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 124.7
March 2016 Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount			$ 350.0
Stock Repurchased During Period, Shares	0	0
Stock Repurchased During Period, Value	$ 0.0	$ 0.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 350.0