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GOODWILL AND INTANGIBLE ASSETS, NET - Schedule of Intangible Assets (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Sep. 30, 2021
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Indefinite-lived Intangible Assets [Line Items] |  |
Total indefinite-lived intangible assets | $ 323.9 | $ 323.9
Total intangible assets, net | 580.2 | 709.6
Intangible Assets [Line Items] |  |
Total finite-lived intangible assets, net | 256.3 | 385.7
Trade names |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Total indefinite-lived intangible assets | 168.2 | 168.2
Roundup® marketing agreement amendment |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Total indefinite-lived intangible assets | 155.7 | 155.7
Trade names |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | 318.4 | 293.4
Accumulated Amortization/ Impairment Charges | (174.3) | (73.3)
Total finite-lived intangible assets, net | 144.1 | 220.1
Customer relationships |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | 251.1 | 228.3
Accumulated Amortization/ Impairment Charges | (158.4) | (91.7)
Total finite-lived intangible assets, net | 92.7 | 136.6
Technology |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | 49.1 | 49.2
Accumulated Amortization/ Impairment Charges | (43.3) | (41.3)
Total finite-lived intangible assets, net | 5.8 | 7.9
Other |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | 34.7 | 35.3
Accumulated Amortization/ Impairment Charges | (21.0) | (14.2)
Total finite-lived intangible assets, net | $ 13.7 | $ 21.1

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