Segment Information (Geographic Revenue) (Details) - USD ($) $ 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
Segment Reporting Information [Line Items]
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
Total Americas [Member]
Segment Reporting Information [Line Items]
Net revenue									99.8	73.0	77.5
UNITED STATES
Segment Reporting Information [Line Items]
Net revenue									66.8	47.5	67.3
Other Americas [Member]
Segment Reporting Information [Line Items]
Net revenue									33.0	25.5	10.2
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Net revenue									3,105.8	2,170.9	1,671.7
China
Segment Reporting Information [Line Items]
Net revenue									2,249.2	1,574.4	979.3
Taiwan
Segment Reporting Information [Line Items]
Net revenue									506.9	322.2	387.5
South Korea
Segment Reporting Information [Line Items]
Net revenue									100.0	107.4	102.9
Asia
Segment Reporting Information [Line Items]
Net revenue									249.7	166.9	202.0
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Net revenue									$ 52.8	$ 47.6	$ 42.8