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Summary of Significant Accounting Policies - Cash and Inventories (Details) - USD ($) $ in Millions | May 31, 2025 | May 31, 2024
--- | --- | ---
Inventories |  |
Aircraft and engine parts, components and finished goods | $ 659.4 | $ 580.3
Raw materials and parts | 119.9 | 114.1
Work-in-process | 29.9 | 38.7
Escrow Deposit, Current | 5.3 |
Total inventories | $ 809.2 | 733.1
Amount set aside by a contractual agreement related to receivable securitization arrangements |  | $ 7.4

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