Basis of Presentation - Additional Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
Nov. 30, 2025 USD ($)	Aug. 31, 2025 USD ($)	Nov. 30, 2024 USD ($)	Nov. 30, 2025 USD ($) segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for credit losses for client receivables and contract assets	$ 24,571	$ 32,247		$ 24,571
Accumulated depreciation	2,988,124	2,926,630		2,988,124
Business optimization costs	$ 307,541	$ 615,324	$ 0	923,000
Employee severance				628,000
Asset impairments				$ 295,000
Number of divestitures \| segment				2

Number Of Divestitures

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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