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Derivatives (Narrative) (Details) € in Millions, $ in Millions	3 Months Ended	6 Months Ended
	Mar. 29, 2020 USD ($)	Mar. 29, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 29, 2020 EUR (€)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
4.00% Notes, Due October 1, 2026 [Member]
Derivative [Line Items]
Notes	$ 468.9	$ 468.9			$ 465.0
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	$ 0.0
Cash Flow Hedging [Member] \| Commodity Swaps [Member]
Derivative [Line Items]
Derivative, maturity date		Aug. 31, 2021
Derivative net (loss) gain estimated to be reclassified from AOCI into earnings over the next 12 months	0.5	$ 0.5
Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional value	201.4	$ 201.4			235.6
Derivative, maturity date		Sep. 29, 2021
Derivative net (loss) gain estimated to be reclassified from AOCI into earnings over the next 12 months	4.0	$ 4.0
Fair Value Hedging [Member]
Derivative [Line Items]
Posted cash collateral	0.0	0.0			0.0
Posted standby letters of credit	0.0	0.0			0.0
Net Investment Hedge [Member]
Derivative [Line Items]
Pre-tax gain (loss) related to translation of undesignated debt obligation recognized in earnings	0.5	(1.2)
Not Designated as Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional value	$ 531.8	$ 531.8			$ 977.5
Derivative, maturity date		Apr. 24, 2020
Spectrum Brands, Inc. [Member] \| Net Investment Hedge [Member] \| 4.00% Notes, Due October 1, 2026 [Member]
Derivative [Line Items]
Notional value \| €				€ 345.6
Notes \| €				€ 425.0
Interest rate	4.00%	4.00%		4.00%