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Derivative Financial Instruments and Fair Value Measurements | 6 Months Ended
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Mar. 31, 2024
Derivative Financial Instruments and Fair Value Measurements |
Derivative Financial Instruments and Fair Value Measurements | 8. Derivative Financial Instruments and Fair Value Measurements ​ The Company uses interest rate derivative contracts to hedge interest rate exposures on the Company’s variable rate debt. The Company enters into foreign currency derivative contracts with financial institutions to reduce the risk that its cash flows and earnings will be adversely affected by foreign currency exchange rate fluctuations. The Company’s hedging program is not designated for trading or speculative purposes. ​ The Company recognizes derivative instruments as either assets or liabilities on the accompanying consolidated balance sheets at fair value. The Company records changes in the fair value (i.e., gains or losses) of the derivatives that have been designated as accounting hedges in the accompanying consolidated statements of operations as cost of revenue, interest expense or to accumulated other comprehensive loss in the accompanying consolidated balance sheets. ​ Cash Flow Hedges ​ The Company uses interest rate swap and interest rate cap agreements designated as cash flow hedges to limit exposure to variable interest rates on portions of the Company’s debt. The Company initially reports any gain on the effective portion of a cash flow hedge as a component of accumulated other comprehensive loss. Depending on the type of cash flow hedge, the gain is subsequently reclassified against interest expense when the interest expense on the variable rate debt is recognized. If the hedged transaction becomes probable of not occurring, any gain or loss related to interest rate swap or interest rate cap agreements would be recognized in other income. ​ During the third quarter of fiscal 2023, the hedged debt index was changed from LIBOR to SOFR. The notional principal, fixed rates and related effective and expiration dates of the Company’s outstanding interest rate swap agreements were as follows: ​
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March 31, 2024
Notional Amount | ​ | Notional Amount | ​ | Fixed | ​ | Effective | ​ | Expiration
Currency |  | (in millions) |  | Rate |  | Date |  | Date
USD | ​ | 400.0 | ​ | 1.283% | ​ | February 2023 | ​ | March 2028
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
September 30, 2023
Notional Amount | ​ | Notional Amount | ​ | Fixed | ​ | Effective | ​ | Expiration
Currency |  | (in millions) |  | Rate |  | Date |  | Date
USD | ​ | 400.0 |  | 1.283% | ​ | February 2023 | ​ | March 2028
​ In the fourth quarter of fiscal 2021, the Company entered into new interest rate swap agreements with a notional value of $400.0 million to manage the interest rate exposure of its variable rate loans. The new swaps became effective February 2023 and terminate in March 2028. By entering into the swap agreements, the Company converted a portion of the SOFR rate-based liability into a fixed rate liability. The Company will pay a fixed rate of 1.283% and receive payment at the prevailing one-month SOFR. In the third quarter of fiscal 2022, the Company purchased interest rate cap agreements with a notional value of $300.0 million to manage interest rate exposure of its variable rate loans. The caps became effective on June 30, 2022 and terminate in March 2028. The caps reduce the Company’s exposure to one-month SOFR. In the event one-month SOFR exceeds 3.465%, the Company will receive the spread between prevailing one-month SOFR and 3.465%. ​ Other Foreign Currency Forward Contracts ​ The Company uses foreign currency forward contracts which are not designated as accounting hedges to hedge intercompany transactions and other monetary assets or liabilities denominated in currencies other than the functional currency of a subsidiary. Gains and losses on these contracts were not material for the six months ended March 31, 2024 and 2023. ​ Fair Value Measurements ​ The Company’s non-pension financial assets and liabilities recorded at fair value relate to the interest rate swap and interest rate cap agreements included in other current assets, other non-current assets, and other non-current liabilities on March 31, 2024 were $15.2 million, $27.1 million and $0.6 million, respectively. The fair values of the interest rate swap and interest rate cap agreements included in other current assets and other non-current assets on September 30, 2023 were $17.2 million and $37.5 million, respectively. The fair values of the interest rate swap and interest rate cap agreements were derived by taking the net present value of the expected cash flows using observable market inputs (Level 2) such as SOFR rate curves, futures, volatilities and basis spreads (when applicable). ​ See Note 14 for accumulated balances and reporting period activities of derivatives related to reclassifications out of accumulated other comprehensive loss for the six months ended March 31, 2024 and 2023. Additionally, there were no material losses recognized in income due to amounts excluded from effectiveness testing from the Company’s interest rate swap and interest rate cap agreements.

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- Definition Disclosure information pertaining to derivative instruments and fair value measurements. + References No definition available. + Details
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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-5C Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//815/tableOfContent + Details
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