Fair Value Of Financial Instruments (Summary Of Income Recognized From Equity Investments) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 29, 2020	Mar. 31, 2019	Mar. 29, 2020	Mar. 31, 2019
Unrealized loss on investments held			$ (53.3)	$ (5.0)
Realized loss on equity investments sold			(15.0)
Loss on equity investments	$ 106.8	$ 5.0	68.3	5.0
Energizer [Member]
Unrealized loss on investments held	(84.5)	(5.0)	(53.3)	(5.0)
Realized loss on equity investments sold	(22.3)		(15.0)
Loss on equity investments	(106.8)	(5.0)	(68.3)	(5.0)
Dividend income from equity investments	1.6	1.6	3.2	1.6
Income from equity investments	$ (105.2)	$ (3.4)	$ (65.1)	$ (3.4)

Amount of realized and unrealized gain (loss) on investment.

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This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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Amount of dividend income on nonoperating securities.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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