Segment Information (Geographic Revenue) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Jan. 01, 2016	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Jan. 02, 2015	Sep. 30, 2016	Oct. 02, 2015	Oct. 03, 2014
Segment Reporting Information [Line Items]
Net revenue	$ 835.4	$ 751.7	$ 775.1	$ 926.8	$ 880.8	$ 810.0	$ 762.1	$ 805.5	$ 3,289.0	$ 3,258.4	$ 2,291.5
Total Americas [Member]
Segment Reporting Information [Line Items]
Net revenue									92.1	99.8	73.0
UNITED STATES
Segment Reporting Information [Line Items]
Net revenue									63.3	66.8	47.5
Other Americas [Member]
Segment Reporting Information [Line Items]
Net revenue									28.8	33.0	25.5
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Net revenue									3,145.8	3,105.8	2,170.9
China
Segment Reporting Information [Line Items]
Net revenue									2,324.6	2,249.2	1,574.4
Taiwan
Segment Reporting Information [Line Items]
Net revenue									474.2	506.9	322.2
South Korea
Segment Reporting Information [Line Items]
Net revenue									94.8	100.0	107.4
Asia
Segment Reporting Information [Line Items]
Net revenue									252.2	249.7	166.9
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Net revenue									$ 51.1	$ 52.8	$ 47.6