Presentation of Financial Information - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 03, 2016	Apr. 02, 2017	Apr. 03, 2016
New Accounting Pronouncement, Early Adoption [Line Items]
Operating activities in cash flows		$ 199.1	$ 88.3
Financing activities in cash flows		$ (154.0)	$ 1,502.2
Adjustments for New Accounting Principle, Early Adoption | Accounting Standards Update 2016-15
New Accounting Pronouncement, Early Adoption [Line Items]
Operating activities in cash flows	$ (61.3)
Financing activities in cash flows	$ 61.3