Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 30, 2016	Dec. 29, 2017	Sep. 30, 2016	Sep. 25, 2015
Schedule of Significant Accounting Policies [Line Items]
Shipping costs	$ 3.4	$ 13.9	$ 12.4	$ 11.6
Foreign Currency Transaction Gain (Loss), before Tax	9.0	2.5	(3.6)	31.6
Foreign currency transactions gain (loss), derivative instruments	$ (8.9)	$ (4.1)	$ 0.2	$ (24.8)
Customer relationships
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		12 years
Minimum | Completed Technology
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		5 years
Minimum | Licensing Agreements
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		7 years
Minimum | Trademarks
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		13 years
Minimum | Buildings
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		10 years
Minimum | Leasehold improvements
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		1 year
Minimum | Capitalized software
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		1 year
Minimum | Machinery and equipment
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		1 year
Maximum | Completed Technology
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		25 years
Maximum | Licensing Agreements
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		30 years
Maximum | Trademarks
Schedule of Significant Accounting Policies [Line Items]
Finite-lived intangible assets - useful lives		30 years
Maximum | Buildings
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		45 years
Maximum | Leasehold improvements
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		20 years
Maximum | Capitalized software
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		10 years
Maximum | Machinery and equipment
Schedule of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		20 years