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v3.26.1

Debt, Derivatives and Hedging Activities - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Feb. 28, 2026 | Feb. 28, 2025 | Feb. 28, 2026 | Feb. 28, 2025 | May 31, 2025
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, carrying amount | $ 2,436,600,000 |  | $ 2,436,600,000 |  | $ 2,436,600,000
Debt, fair value | 2,459,400,000 |  | 2,459,400,000 |  | 2,404,700,000
Notional value | 500,000,000.0 |  | 500,000,000.0 |  | 500,000,000.0
Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt due within one year | 229,490,000 |  | $ 229,490,000 |  | 0
Interest rate |  |  | 3.81% |  |
Debt due within one year |  |  |  |  | 0
Accumulated Other Comprehensive Income |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amortization of interest rate lock agreements - decrease to other comprehensive income | 1,500,000 | $ 1,500,000 | $ 4,600,000 | $ 4,600,000 |
Revolving credit facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit facility amount outstanding | 0 |  | 0 |  | $ 0
Revolving credit facility | Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit facility, maximum borrowing capacity with accordion feature | 2,000,000,000.0 |  | 2,000,000,000.0 |  |
Debt amendment, increase limit (up to) | 1,000,000,000.0 |  | 1,000,000,000.0 |  |
Letter of Credit | Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit facility, maximum borrowing capacity with accordion feature | 300,000,000.0 |  | 300,000,000.0 |  |
Bridge Loan | Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit facility, maximum borrowing capacity with accordion feature | $ 150,000,000.0 |  | $ 150,000,000.0 |  |

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