Description of Business, Basis of Presentation, and Significant Accounting Policies (Summary of Accounts Receivable, Net of Allowance for Credit Losses) (Details) - USD ($) $ in Millions |
May 31, 2026 |
May 31, 2025 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable, gross | $ 1,548.0 | $ 1,356.5 |
| Less: Allowance for credit losses | 40.4 | 26.0 |
| Accounts receivable, net of allowance for credit losses | 1,507.6 | 1,330.5 |
| Trade Receivables [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable, gross | 238.5 | 205.4 |
| Purchased Receivables [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable, gross | $ 1,309.5 | $ 1,151.1 |