Income Taxes - (Summary of Income Taxes Paid, Net of Refunds By Significant Jurisdiction) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2026 |
May 31, 2025 |
May 31, 2024 |
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| Effective Income Tax Rate Reconciliation [Line Items] | |||
| Federal | $ 205.0 | $ 406.0 | $ 439.0 |
| State | 105.3 | 106.4 | 100.5 |
| Total income tax payments, net of refunds | 310.3 | $ 512.4 | $ 539.5 |
| California | |||
| Effective Income Tax Rate Reconciliation [Line Items] | |||
| State | 26.3 | ||
| Other | |||
| Effective Income Tax Rate Reconciliation [Line Items] | |||
| State | $ 79.0 | ||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after income tax refund received, of cash paid to state and local tax jurisdictions for tax on income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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