Fair Value Measurements |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Measurements | Fair Value Measurements Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The accounting guidance establishes a three-level hierarchy for disclosure that is based on the extent and level of judgment used to estimate the fair value of assets and liabilities. •Level 1 — uses unadjusted quoted prices that are available in active markets for identical assets or liabilities. Our Level 1 assets were comprised of money market funds and certain marketable securities and our Level 1 liabilities included senior notes as of June 30, 2025 and September 30, 2024. •Level 2 — uses inputs other than quoted prices included in Level 1 that are either directly or indirectly observable through correlation with market data. These include quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and inputs to valuation models or other pricing methodologies that do not require significant judgment because the inputs used in the model, such as interest rates and volatility, can be corroborated by readily observable market data. We did not have any assets or liabilities that are valued using inputs identified under a Level 2 hierarchy as of June 30, 2025 and September 30, 2024. •Level 3 — uses one or more significant inputs that are unobservable and supported by little or no market activity, and that reflect the use of significant management judgment. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies or similar valuation techniques, and significant management judgment or estimation. We did not value any assets or liabilities using inputs identified under a Level 3 hierarchy as of June 30, 2025 and September 30, 2024. The following tables represent financial assets that we measured at fair value on a recurring basis at June 30, 2025 and September 30, 2024:
(1)Included in cash and cash equivalents on our condensed consolidated balance sheets at June 30, 2025 and September 30, 2024. Not included in these tables are cash deposits of $156.7 million and $142.8 million at June 30, 2025 and September 30, 2024, respectively. (2)Represents securities held under a supplemental retirement and savings plan for certain officers and senior management employees, which are distributed upon termination or retirement of the employees. Included in marketable securities on our condensed consolidated balance sheets at June 30, 2025 and September 30, 2024. See Note 6 for the fair value of our senior notes. There were no transfers between Level 1, Level 2, and Level 3 of the fair value hierarchy during the quarters and nine-month periods ended June 30, 2025 and 2024.
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