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v3.19.1

Subsequent Events (Narrative) (Details) - USD ($) shares in Millions, $ in Millions |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 11, 2018 | Nov. 15, 2018 | Dec. 31, 2018 | Sep. 30, 2018
Global Battery And Lighting [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Write-down of assets of business held for sale to fair value less cost to sell |  |  |  | $ 0.0
Global Auto Care [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Write-down of assets of business held for sale to fair value less cost to sell |  |  |  | $ 107.2
Global Auto Care [Member] | Forecast [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Write-down of assets of business held for sale to fair value less cost to sell |  |  | $ 107.2 |
Energizer [Member] | Global Battery And Lighting [Member] | Downward Adjustment Equal To 75% [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Purchase price adjustment | $ 600.0 |  |  |
Energizer [Member] | Global Battery And Lighting [Member] | Upward Adjustment Equal To 25% [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Purchase price adjustment | $ 200.0 |  |  |
Energizer [Member] | Global Auto Care [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Purchase price |  | $ 1,250.0 |  |
Cash from divestiture |  | $ 937.5 |  |
Common Stock [Member] | Energizer [Member] | Global Auto Care [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Stock consideration, shares |  | 5.3 |  |
Stock consideration, value |  | $ 312.5 |  |
Common Stock [Member] | Energizer [Member] | Global Auto Care [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Stock consideration, shares |  | 5.3 |  |
Stock consideration, value |  | $ 312.5 |  |
Maximum [Member] | Energizer [Member] | Global Battery And Lighting [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Potential downward adjustment, percentage | 75.00% |  |  |
Potential upward adjustment, percentage | 25.00% |  |  |

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