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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on OCI and the Condensed, Consolidated Statements of Operations (Details) - Fair value, inputs, level 2 - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Derivatives not designated as Hedging Instruments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain/(Loss) Recognized in Statement of Operations | $ (13.5) | $ 28.4
Derivatives not designated as Hedging Instruments | Currency forward contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain/(Loss) Recognized in Statement of Operations | $ (14.7) | $ 17.9
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Operating Income (Expense), Net | Other Operating Income (Expense), Net
Derivatives not designated as Hedging Instruments | Commodity hedging instruments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain/(Loss) Recognized in Statement of Operations | $ 1.2 | $ 10.5
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of sales | Cost of sales
Cash Flow Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain/(Loss) Recognized in AOCI | $ 4.2 | $ 29.9
Amount of Gain/(Loss) Reclassified From AOCI Into Statement of Operations | 17.4 | 6.8
Cash Flow Hedging | Interest rate swap agreements |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain/(Loss) Recognized in AOCI | 11.3 | 24.1
Amount of Gain/(Loss) Reclassified From AOCI Into Statement of Operations | $ 11.5 | $ (2.1)
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration] | Interest expense | Interest expense
Cash Flow Hedging | Commodity hedging instruments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain/(Loss) Recognized in AOCI | $ (7.1) | $ 5.8
Amount of Gain/(Loss) Reclassified From AOCI Into Statement of Operations | $ 5.9 | $ 8.9
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of sales | Cost of sales

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from effective portion of derivative instrument reclassified from accumulated other comprehensive income (AOCI) into income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4D + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E + Details
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- Definition Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A + Details
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