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Fair Value Of Financial Instruments (Narrative) (Details) - Common Stock [Member] - Energizer [Member] - USD ($) shares in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 28, 2019 | Jun. 30, 2019 | Jun. 30, 2019
Fair Value Of Financial Instruments [Line Items] |  |  |
Unrealized loss on investment |  | $ 33.2 | $ 38.2
Dividend income |  | $ 1.6 | $ 3.2
Global Auto Care [Member] |  |  |
Fair Value Of Financial Instruments [Line Items] |  |  |
Stock consideration, shares | 5.3 |  |
Stock consideration, value | $ 242.1 |  |

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