| Long-Term Debt | 3 Months Ended |
| Dec. 31, 2024 |
| Debt Disclosure [Abstract] | |
| Long-Term Debt | LONG-TERM DEBT The components of “Long-term debt” on the Condensed Consolidated Balance Sheets are presented in the following table. December 31, September 30, 2024 2.50% convertible senior notes maturing August 2027 $ 575.0 $ 575.0 4.50% senior notes maturing September 2031 980.6 980.6 4.625% senior notes maturing April 2030 1,385.4 1,385.4 5.50% senior notes maturing December 2029 1,235.0 1,235.0 5.625% senior notes maturing January 2028 — 464.9 6.25% senior secured notes maturing February 2032 1,000.0 1,000.0 6.250% senior notes maturing October 2034 600.0 — 6.375% senior notes maturing March 2033 1,200.0 1,200.0 Municipal bond 4.2 4.2 $ 6,980.2 $ 6,845.1 Less: Current portion of long-term debt 1.2 1.2 Debt issuance costs, net 57.2 55.9 Plus: Unamortized premium, net 22.6 23.6 Total long-term debt $ 6,944.4 $ 6,811.6 |
| Long-Term Debt - Senior Notes | Convertible Senior Notes On August 12, 2022, the Company issued $575.0 principal value of 2.50% convertible senior notes maturing in August 2027. The initial conversion rate of the 2.50% convertible senior notes is 9.4248 shares of the Company’s common stock per one thousand dollars principal amount of the 2.50% convertible senior notes, which represents an initial conversion price of approximately $106.10 per share of common stock. The conversion rate, and thus the conversion price, may be adjusted under certain circumstances as described in the indenture governing the 2.50% convertible senior notes (the “Convertible Notes Indenture”). The Company may settle conversions by paying or delivering, as applicable, cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election. If a “make-whole fundamental change” (as defined in the Convertible Notes Indenture) occurs, then the Company must in certain circumstances increase the conversion rate for a specified period of time. The 2.50% convertible senior notes may be converted at the holder’s option up to the second scheduled trading day immediately before the maturity date of August 15, 2027 under the following circumstances: • during any calendar quarter (and only during such calendar quarter) if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price for each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter; • during the five consecutive business days immediately after any 10 consecutive trading day period (such 10 consecutive trading day period, the “Measurement Period”) in which the trading price per one thousand dollars principal amount of the 2.50% convertible senior notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price per share of the Company’s common stock on such trading day and the conversion rate on such trading day; • upon the occurrence of certain corporate events or distributions on the Company’s common stock described in the Convertible Notes Indenture; • if the Company calls the 2.50% convertible senior notes for redemption; and • at any time from, and including, May 15, 2027 until the close of business on the second scheduled trading day immediately before the August 15, 2027 maturity date. If a “fundamental change” (as defined in the Convertible Notes Indenture) occurs, then, except as described in the Convertible Notes Indenture, holders of the 2.50% convertible senior notes may require the Company to repurchase their 2.50% convertible senior notes at a cash repurchase price equal to the principal amount of the 2.50% convertible senior notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the “fundamental change repurchase date” (as defined in the Convertible Notes Indenture). The 2.50% convertible senior notes may be redeemed, in whole or in part (subject to the partial redemption limitation described in the Convertible Notes Indenture), at the Company’s option at any time, and from time to time, on or after August 20, 2025 and on or before the 35th scheduled trading day immediately before August 15, 2027, at a cash redemption price equal to the principal amount of the 2.50% convertible senior notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price on (i) each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice, and (ii) the trading day immediately before the date the Company sends such notice. As of both December 31, 2024 and September 30, 2024, none of the conditions permitting holders to convert their 2.50% convertible senior notes had been satisfied, and no shares of the Company’s common stock had been issued in connection with any conversions of the 2.50% convertible senior notes. The 2.50% convertible senior notes had no embedded features that required separate bifurcation under ASC Topic 815 as of December 31, 2024 or September 30, 2024. As such, the 2.50% convertible senior notes were recorded at the principal amount, net of unamortized issuance costs, on the Condensed Consolidated Balance Sheets as of both December 31, 2024 and September 30, 2024. Other Senior Notes On October 9, 2024, the Company issued $600.0 principal value of 6.250% senior notes maturing in October 2034. The 6.250% senior notes were issued at par and the Company received $594.8 after incurring underwriting fees and other fees and expenses of $5.2, which were deferred and are being amortized to interest expense over the term of the notes. Interest payments on the 6.250% senior notes are due semi-annually each April 15 and October 15, with the first interest payment due on April 15, 2025. With a portion of the net proceeds received from the 6.250% senior notes issuance, the Company redeemed the remaining balance of the Company’s outstanding 5.625% senior notes maturing in January 2028 and all accrued and unpaid interest to the redemption date. For additional information, see “Repayments of Debt” below. The remaining portion of the net proceeds were used for general corporate purposes. The 6.250% senior notes are fully and unconditionally guaranteed, jointly and severally, on a senior, unsecured basis by each of the Company’s existing and subsequently acquired or organized wholly-owned domestic subsidiaries (other than immaterial subsidiaries, certain excluded subsidiaries and subsidiaries the Company designates as unrestricted subsidiaries, which include 8th Avenue and its subsidiaries). |
| Long-Term Debt - Credit Agreement | Credit Agreement On March 18, 2020, the Company entered into a second amended and restated credit agreement (a s amended, including by Joinder Agreement No. 1, Joinder Agreement No. 2, Joinder Agreement No. 3, Joinder Agreement No. 4 and the Third Amendment (as defined below), restated or amended and restated, the “Credit Agreement”). Prior to the effective date of the Third Amendment, the Credit Agreement provided for a revolving credit facility in an aggregate principal amount of $750.0 (the “Old Revolving Credit Facility”), with the commitments thereunder to be made available to the Company in U.S. Dollars, Canadian Dollars, Euros and Pounds Sterling. Letters of credit are available under the Credit Agreement in an aggregate amount of up to $75.0 . On February 20, 2024, the Company entered into a third amendment to the Credit Agreement (the “Third Amendment”) by and among the Company, as borrower, certain of the Company’s subsidiaries, as guarantors, Barclays Bank PLC (“Barclays”), as administrative agent under the Credit Agreement prior to the effective date of the Third Amendment, JPMorgan Chase Bank, N.A. (“JPMorgan Chase”), as administrative agent under the Credit Agreement from and after the effective date of the Third Amendment, the institutions constituting the 2024 Revolving Credit Lenders, the L/C Issuers and the Swing Line Lender (as each such term is defined in the Third Amendment). The Third Amendment (i) replaced the Old Revolving Credit Facility with a new revolving credit facility in an aggregate principal amount of $1,000.0 (the “New Revolving Credit Facility”), (ii) extended the maturity date of the New Revolving Credit Facility to February 20, 2029, provided that if on October 16, 2027 the Company’s 5.625% senior notes had not been redeemed in full in cash or refinanced and replaced in full with notes and/or loans maturing at least 91 days after February 20, 2029, then the maturity date of the New Revolving Credit Facility would have been October 16, 2027 and (iii) modified certain other terms, conditions and provisions of the Credit Agreement, including transferring the administrative agent role from Barclays to JPMorgan Chase. The term “Revolving Credit Facility” used herein generally refers to the Old Revolving Credit Facility prior to the Third Amendment and the New Revolving Credit Facility subsequent to the Third Amendment. Borrowings in U.S. Dollars under the New Revolving Credit Facility bear interest, at the option of the Company, at an annual rate equal to either (a) the adjusted term SOFR rate (as defined in the Credit Agreement) or (b) the base rate determined by reference to the highest of (i) the prime rate, (ii) the NYFRB Rate (as defined in the Credit Agreement) plus 0.50% per annum and (iii) the one-month adjusted term SOFR rate plus 1.00% per annum, in each case plus an applicable margin, which is determined by reference to the secured net leverage ratio (as defined in the Credit Agreement), with the applicable margin for adjusted term SOFR rate loans and base rate loans being (i) 2.00% and 1.00%, respectively, if the secured net leverage ratio is greater than or equal to 3.00:1.00, (ii) 1.75% and 0.75%, respectively, if the secured net leverage ratio is less than 3.00:1.00 and greater than or equal to 1.50:1.00 or (iii) 1.50% and 0.50%, respectively, if the secured net leverage ratio is less than 1.50:1.00. Commitment fees on the daily unused amount of commitments under the Revolving Credit Facility accrue at a rate of 0.375% if the Company’s secured net leverage ratio is greater than or equal to 3.00:1.00, and accrue at a rate of 0.25% if the Company’s secured net leverage ratio is less than 3.00:1.00. During the three months ended December 31, 2024, t he Company had no borrowings or repayments under the Revolving Credit Facility. During the three months ended December 31, 2023, the Company borrowed $345.0 and repaid $45.0 under the Revolving Credit Facility. T here were no amounts outstanding under the Revolving Credit Facility as of December 31, 2024 or September 30, 2024 . As of December 31, 2024 and September 30, 2024 , the Revolving Credit Facility had outstanding letters of credit of $22.3 and $20.0, respectively, which reduced its available borrowing capacity to $977.7 and $980.0, respectively. The Credit Agreement provides for potential incremental revolving and term facilities at the request of the Company and at the discretion of the lenders or other persons providing such incremental facilities, in each case on terms to be determined, and also permits the Company to incur other secured or unsecured debt, in all cases subject to conditions and limitations specified in the Credit Agreement. The Credit Agreement provides for customary events of default, including material breach of representations and warranties, failure to make required payments, failure to comply with certain agreements or covenants, failure to pay or default under certain other indebtedness in excess of $125.0, certain events of bankruptcy and insolvency, inability to pay debts, the occurrence of one or more unstayed or undischarged judgments in excess of $125.0, attachments issued against all or any material part of the Company’s property, certain events under the Employee Retirement Income Security Act of 1974, a change of control (as defined in the Credit Agreement), the invalidity of any loan document and the failure of the collateral documents to create a valid and perfected first priority lien (subject to certain permitted liens). Upon the occurrence and during the continuance of an event of default, the maturity of the loans under the Credit Agreement may accelerate and the agent and lenders under the Credit Agreement may exercise other rights and remedies available at law or under the loan documents, including with respect to the collateral and guarantees of the Company’s obligations under the Credit Agreement. |
| Long-Term Debt - Muni Bond | Municipal Bond In connection with the construction of a filtration system at the Company’s potato plant in Chaska, Minnesota, the Company incurred debt that guarantees the repayment of certain industrial revenue bonds used to finance the construction of the project. Principal payments are due annually on March 1, and interest payments are due semi-annually each March 1 and September 1. The debt matures on March 1, 2028. |
| Long-Term Debt - Repayments & Other | Repayments of Debt The following table presents the Company’s principal repayments of debt, which, net of discounts, were included in the Condensed Consolidated Statements of Cash Flows, and the associated loss (gain) related to such repayments, which were included in “Loss (gain) on extinguishment of debt, net” in the Condensed Consolidated Statements of Operations. Loss (Gain) on Extinguishment of Debt, net Debt Instrument Principal Amount Repaid Debt Premiums Paid / Discounts (Received) Write-off of Debt Issuance Costs Three Months Ended December 31, 2024 5.625% senior notes $ 464.9 $ 4.4 $ 1.4 Total $ 464.9 $ 4.4 $ 1.4 Three Months Ended December 31, 2023 4.50% senior notes $ 25.9 $ (3.3) $ 0.2 Revolving Credit Facility 45.0 — — Total $ 70.9 $ (3.3) $ 0.2 Debt Covenants Under the terms of the Credit Agreement, the Company is required to comply with a financial covenant consisting of a secured net leverage ratio not to exceed 4.25:1.00, measured as of the last day of any fiscal quarter, if, as of the last day of such fiscal quarter, the aggregate outstanding amount of all revolving credit loans, swing line loans and letter of credit obligations (subject to certain exceptions specified in the Credit Agreement) exceeds 30% of the Company’s revolving credit commitments. As of December 31, 2024, the Company was in compliance with this financial covenant. |
