Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Oct. 02, 2015		Jul. 03, 2015		Apr. 03, 2015		Jan. 02, 2015		Oct. 03, 2014		Jun. 27, 2014		Mar. 28, 2014		Dec. 27, 2013		Oct. 02, 2015		Oct. 03, 2014		Sep. 27, 2013
Selected Quarterly Financial Information [Abstract]
Net revenue	$ 880.8		$ 810.0		$ 762.1		$ 805.5		$ 718.2		$ 587.0		$ 481.0		$ 505.2		$ 3,258.4		$ 2,291.5		$ 1,792.0
Gross Profit	436.2		393.1		352.2		373.0		324.0		264.2		212.4		222.0		1,554.5		1,022.7		766.6
Net income	$ 229.2		$ 207.4		$ 166.5		$ 195.2		$ 174.9		$ 111.4		$ 76.9		$ 94.5		$ 798.3		$ 457.7		$ 278.1
Net income, basic (in dollars per share)	$ 1.21	[1]	$ 1.09	[1]	$ 0.88	[1]	$ 1.03	[1]	$ 0.93	[1]	$ 0.59	[1]	$ 0.41	[1]	$ 0.51	[1]	$ 4.21	[1]	$ 2.44	[1]	$ 1.48
Net income, diluted (in dollars per share)	$ 1.18	[1]	$ 1.06	[1]	$ 0.85	[1]	$ 1.01	[1]	$ 0.90	[1]	$ 0.58	[1]	$ 0.40	[1]	$ 0.49	[1]	$ 4.10	[1]	$ 2.38	[1]	$ 1.45

[1] Earnings per share calculations for each of the quarters are based on the weighted average number of shares outstanding and included common stock equivalents in each period. Therefore, the sums of the quarters do not necessarily equal the full year earnings per share.