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Income Taxes (Tables) | 12 Months Ended
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May 31, 2026
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Before Income Taxes | Income before income taxes consists of the following components for the fiscal years ended May 31:
(In thousands) | 2026 |  | 2025 |  | 2024
U.S. operations | $ | 2,336,940 |  |  | $ | 2,117,251 |  |  | $ | 1,860,859 |
Foreign operations | 168,394 |  |  | 146,951 |  |  | 112,776 |
| $ | 2,505,334 |  |  | $ | 2,264,202 |  |  | $ | 1,973,635 |
Schedule of Components of Income Taxes | Income tax expense consists of the following components for the fiscal years ended May 31:
(In thousands) | 2026 |  | 2025 |  | 2024
Current: |  |  |  |  |
Federal | $ | 334,423 |  |  | $ | 352,652 |  |  | $ | 327,616 |
State and local | 81,235 |  |  | 96,808 |  |  | 79,583 |
Foreign | 30,118 |  |  | 10,580 |  |  | 25,344 |
| 445,776 |  |  | 460,040 |  |  | 432,543 |
Deferred | 59,590 |  |  | (8,119) |  |  | (30,500) |
| $ | 505,366 |  |  | $ | 451,921 |  |  | $ | 402,043 |
Schedule of Reconciliation of Income Tax Expense Using the Statutory Rate and Actual Income Tax Expense | Reconciliation of income tax expense using the statutory rate and actual income tax expense is as follows for the fiscal year ended May 31, 2026:
(In thousands) |  |  |
Income taxes at the U.S. federal statutory rate | $ | 526,120 |  |  | 21.0%
State and local income taxes, net of federal benefit (1) | 63,394 |  |  | 2.5%
Foreign tax effects | (4,835) |  |  | (0.2)%
Effect of cross-border tax laws | (3,219) |  |  | (0.1)%
Tax credits | (13,325) |  |  | (0.5)%
Nontaxable or nondeductible items: |  |  |
Stock-based compensation | (52,953) |  |  | (2.1)%
Other nontaxable and nondeductible items, net | (15,857) |  |  | (0.6)%
Changes in unrecognized tax benefits | 5,719 |  |  | 0.2%
Other | 322 |  |  | 0.0%
| $ | 505,366 |  |  | 20.2%
(1)State taxes in California, Illinois, New York, New Jersey and Wisconsin make up the majority (greater than 50%) of the tax effect in the state and local income tax category. Reconciliation of income tax expense using the statutory rate and actual income tax expense is as follows for the fiscal years ended May 31:
(In thousands) |  |  | 2025 |  | 2024
Income taxes at the U.S. federal statutory rate |  |  | $ | 475,482 |  |  | $ | 414,463 |
Permanent differences (1) |  |  | (75,966) |  |  | (67,310) |
State and local income taxes, net of federal benefit |  |  | 64,052 |  |  | 49,560 |
Other |  |  | (11,647) |  |  | 5,330 |
|  |  | $ | 451,921 |  |  | $ | 402,043 |
(1) Primarily consists of the excess tax benefits related to stock-based compensation.
Schedule of Components of Deferred Income Taxes | The components of deferred income taxes included on the consolidated balance sheets are as follows at May 31:
(In thousands) | 2026 |  | 2025
Deferred tax assets: |  |  |
Allowance for credit losses | $ | 20,720 |  |  | $ | 17,352 |
Inventory reserves | 16,727 |  |  | 17,734 |
Insurance reserves | 44,792 |  |  | 45,029 |
Stock-based compensation | 75,023 |  |  | 66,260 |
Net operating loss and foreign related carry-forwards | 2,428 |  |  | 1,630 |
Operating lease liabilities | 69,972 |  |  | 58,219 |
Deferred compensation and other | 132,104 |  |  | 132,210 |
| 361,766 |  |  | 338,434 |
Valuation allowance | (2,391) |  |  | (1,556) |
| 359,375 |  |  | 336,878 |
Deferred tax liabilities: |  |  |
Uniform and other rental items in service | 306,612 |  |  | 274,781 |
Property and equipment | 197,787 |  |  | 163,247 |
Intangibles and other amortizable assets | 179,915 |  |  | 173,362 |
Treasury locks | 36,686 |  |  | 37,014 |
Capitalized contract costs | 101,190 |  |  | 95,069 |
Operating lease right-of-use assets | 69,972 |  |  | 58,219 |
State taxes and other | 5,132 |  |  | 6,926 |
| 897,294 |  |  | 808,618 |
Net deferred tax liability | $ | 537,919 |  |  | $ | 471,740 |
Schedule of Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of the gross unrecognized tax benefits (exclusive of interest and penalties) is as follows:
(In thousands) |
Balance at June 1, 2024 | $ | 41,746 |
Additions for tax positions of the current year | 14,001 |
Additions for tax positions of prior years | 3,791 |
Statute expirations | (1,530) |
Balance at May 31, 2025 | 58,008 |
Additions for tax positions of the current year | 14,428 |
Settlements | (4,180) |
Statute expirations | (5,536) |
Balance at May 31, 2026 | $ | 62,720 |

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