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Derivatives (Narrative) (Details) € in Millions, $ in Millions	3 Months Ended
	Dec. 29, 2019 USD ($)	Dec. 30, 2018 USD ($)	Dec. 29, 2019 EUR (€)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
4.00% Notes, Due October 1, 2026 [Member]
Derivative [Line Items]
Notes	$ 471.6			$ 465.0
Interest rate	4.00%		4.00%
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative, fixed interest rate					1.76%
Notional value					$ 300.0
Derivative, maturity date	May 08, 2020
Gain on interest rate swap as a reduction to interest expense		$ 3.6
Interest rate swaps outstanding	$ 0.0
Cash Flow Hedging [Member] \| Commodity Contract [Member]
Derivative [Line Items]
Derivative, maturity date	May 31, 2021
Derivative net (loss) gain estimated to be reclassified from AOCI into earnings over the next 12 months	$ 0.1
Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional value	$ 242.4			235.6
Derivative, maturity date	Jun. 30, 2021
Derivative net (loss) gain estimated to be reclassified from AOCI into earnings over the next 12 months	$ 0.4
Fair Value Hedging [Member]
Derivative [Line Items]
Posted cash collateral	0.0			0.0
Posted standby letters of credit	0.0			0.0
Net Investment Hedge [Member]
Derivative [Line Items]
Pretax loss related to translation of undesignated debt obligation recognized in earnings	$ 1.7
Net Investment Hedge [Member] \| 4.00% Notes, Due October 1, 2026 [Member]
Derivative [Line Items]
Notional value \| €			€ 318.5
Notes \| €			€ 425.0
Interest rate	4.00%		4.00%
Not Designated as Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional value	$ 604.7			$ 977.5
Derivative, maturity date	Jan. 24, 2020