Fair Value Fair Value, Assets Measured on Recrring Basis, Unobservable Input Reconciliation (Details) - Fair Value, Measurements, Recurring [Member] $ in Millions	3 Months Ended
	Jan. 01, 2016 USD ($)
Fair Value, Assets [Roll Forward]
Auction rate security, beginning balance	$ 2.3
Foreign currency derivative, beginning balance	3.3
Auction rate security, ending balance	2.3
Foreign currency derivative, ending balance	3.3
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets [Roll Forward]
Auction rate security, beginning balance	2.3
Foreign currency derivative, beginning balance	3.3
Auction rate security, ending balance	2.3
Foreign currency derivative, ending balance	3.3
Fair Value, Inputs, Level 3 [Member] | Auction Rate Securities [Member]
Fair Value, Assets [Roll Forward]
Auction rate security, beginning balance	2.3
Asset, Gain (Loss) Included in Earnings	0.0
Auction rate security, ending balance	2.3
Fair Value, Inputs, Level 3 [Member] | Derivative [Member]
Fair Value, Assets [Roll Forward]
Foreign currency derivative, beginning balance	3.3
Asset, Gain (Loss) Included in Earnings	0.0
Foreign currency derivative, ending balance	$ 3.3