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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) shares in Millions, $ in Millions |  | 6 Months Ended | 12 Months Ended |  |  |
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Sep. 04, 2024 | Jul. 01, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 01, 2024 | Oct. 27, 2023 | Apr. 22, 2022
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Percentage of annual net sales from combined second and third quarter sales |  | 75.00% |  |  |  |  |  |
Number of restricted shares issued (in shares) | 0.3 |  |  |  |  |  |  |
Deferred advertising costs |  |  | $ 20.0 |  |  |  |  |
Advertising expenses |  |  | 141.0 | $ 123.7 | $ 120.3 |  |  |
Research and development charge |  |  | 34.6 | 35.7 | 45.3 |  |  |
Product registration costs |  |  | 9.0 | 12.4 | 13.0 |  |  |
Accounts Receivable, Held-for-Sale |  |  |  |  |  | $ 750.0 | $ 600.0 |
Derecognition of net receivables |  |  | 186.6 |  |  |  |  |
Proceeds from sale of net receivables |  |  | 1,938.6 |  |  |  |  |
Total discount recorded on sale |  |  | 24.6 |  |  |  |  |
Interest capitalized on capital projects |  |  | 1.1 | 2.1 | 2.2 |  |  |
Noncash investing activities for unpaid liabilities incurred |  |  | 16.3 | 32.1 | 33.3 |  |  |
Outstanding payment obligations |  |  | 12.5 | 18.3 |  |  |  |
Supplier finance payment |  |  | 245.5 | 185.3 |  |  |  |
Recognition of accumulated foreign currency translation (gain) loss |  |  | $ (0.4) | $ 1.3 | 1.3 |  |  |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] |  |  | Other Liabilities, Current | Other Liabilities, Current |  |  |  |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] |  |  | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent |  |  |  |
Other investing, net |  |  | $ 2.6 | $ (12.4) | 29.3 |  |  |
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration] |  |  | Accounts Payable, Current | Accounts Payable, Current |  |  |  |
Investments in unconsolidated affiliates |  |  | $ (21.4) | $ 0.0 | 0.0 |  |  |
Proceeds from loans receivable |  |  | $ 0.0 | $ 37.0 | $ 0.0 |  |  |
RIV Capital, Inc. | Convertible Notes Payable |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  | $ 25.0
Standby Letters of Credit |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 75.0 |
Performance-Based Units |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Award vesting period (in years) |  |  | 3 years |  |  |  |  |
Officer | Options |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Expiration period (in years) |  |  | 10 years |  |  |  |  |
Director |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Award vesting period (in years) |  |  | 1 year |  |  |  |  |
Minimum |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Award vesting period (in years) |  |  | 3 years |  |  |  |  |
Expected forfeiture rate |  |  | 15.00% |  |  |  |  |
Intangible assets amortization period |  |  | 3 years |  |  |  |  |
Payment timing, period |  |  | 30 days |  |  |  |  |
Minimum | Software |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Intangible assets amortization period |  |  | 3 years |  |  |  |  |
Minimum | Officer | Performance-Based Units |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Vesting percent of target award |  |  | 0.00% |  |  |  |  |
Maximum |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Intangible assets amortization period |  |  | 25 years |  |  |  |  |
Payment timing, period |  |  | 60 days |  |  |  |  |
Maximum | Software |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Intangible assets amortization period |  |  | 8 years |  |  |  |  |
Maximum | Officer | Performance-Based Units |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Vesting percent of target award |  |  | 325.00% |  |  |  |  |

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