| | 2021-07-31 | 2022-07-31 | 2023-07-31 | 2024-07-31 | 2025-07-31 |
| Amortization Cash Flow | | 9010000.0 | 11060000.0 | 14624000.0 | 16820000.0 |
| Amortization Of Intangibles | | 9010000.0 | 11060000.0 | 14624000.0 | 16820000.0 |
| Amortization Of Securities | | 6580000.0 | -6582000.0 | -19062000.0 | -15923000.0 |
| Asset Impairment Charge | 416000.0 | 0.0 | 0.0 | | |
| Beginning Cash Position | | 275898000.0 | 1013210000.0 | 1262206000.0 | 1423080000.0 |
| Capital Expenditure | | -90580000.0 | -128724000.0 | -194896000.0 | -245760000.0 |
| Capital Expenditure Reported | | -21284000.0 | -31527000.0 | -50308000.0 | -81508000.0 |
| Cash Flow From Continuing Financing Activities | | 41337000.0 | 45990000.0 | 64208000.0 | 420512000.0 |
| Cash Flow From Continuing Investing Activities | | 374063000.0 | -259337000.0 | -683180000.0 | -427022000.0 |
| Cash Flow From Continuing Operating Activities | | 321912000.0 | 462343000.0 | 779846000.0 | 972453000.0 |
| Change In Account Payable | | 14358000.0 | -8416000.0 | 4164000.0 | 17532000.0 |
| Change In Accrued Expense | | 31703000.0 | 51352000.0 | 54063000.0 | 26177000.0 |
| Change In Other Current Liabilities | | -27663000.0 | -32197000.0 | -49239000.0 | -62009000.0 |
| Change In Other Working Capital | | 232676000.0 | 241614000.0 | 250011000.0 | 342599000.0 |
| Change In Payable | | 14358000.0 | -8416000.0 | 4164000.0 | 17532000.0 |
| Change In Payables And Accrued Expense | | 46061000.0 | 42936000.0 | 58227000.0 | 43709000.0 |
| Change In Prepaid Assets | | -10287000.0 | -39922000.0 | -39971000.0 | -41572000.0 |
| Change In Receivables | | -143336000.0 | -183858000.0 | -152960000.0 | -256010000.0 |
| Change In Working Capital | | 97451000.0 | 28573000.0 | 66068000.0 | 26717000.0 |
| Changes In Account Receivables | | -143336000.0 | -183858000.0 | -152960000.0 | -256010000.0 |
| Changes In Cash | | 737312000.0 | 248996000.0 | 160874000.0 | 965943000.0 |
| Common Stock Payments | 0.0 | | | | |
| Deferred Income Tax | | -562000.0 | 352000.0 | -5633000.0 | -14351000.0 |
| Deferred Tax | | -562000.0 | 352000.0 | -5633000.0 | -14351000.0 |
| Depreciation | | 40456000.0 | 55756000.0 | 66308000.0 | 104361000.0 |
| Depreciation Amortization Depletion | | 49466000.0 | 66816000.0 | 80932000.0 | 121181000.0 |
| Depreciation And Amortization | | 49466000.0 | 66816000.0 | 80932000.0 | 121181000.0 |
| End Cash Position | | 1013210000.0 | 1262206000.0 | 1423080000.0 | 2389023000.0 |
| Financing Cash Flow | | 41337000.0 | 45990000.0 | 64208000.0 | 420512000.0 |
| Free Cash Flow | | 231332000.0 | 333619000.0 | 584950000.0 | 726693000.0 |
| Gain Loss On Investment Securities | | 1499000.0 | -3319000.0 | 753000.0 | 369000.0 |
| Income Tax Paid Supplemental Data | 4144000.0 | 5606000.0 | 14940000.0 | 23123000.0 | |
| Interest Paid Supplemental Data | 1462000.0 | 1438000.0 | 1438000.0 | 1436000.0 | |
| Investing Cash Flow | | 374063000.0 | -259337000.0 | -683180000.0 | -427022000.0 |
| Issuance Of Debt | | 0.0 | 0.0 | 0.0 | 1725000000.0 |
| Long Term Debt Issuance | | 0.0 | 0.0 | 0.0 | 1725000000.0 |
| Long Term Debt Payments | | | | | -1150040000.0 |
| Net Business Purchase And Sale | | -25287000.0 | -15643000.0 | -374702000.0 | -834000.0 |
| Net Common Stock Issuance | 0.0 | | | | |
| Net Income From Continuing Operations | | -390278000.0 | -202335000.0 | -57706000.0 | -41478000.0 |
| Net Intangibles Purchase And Sale | 0.0 | | | | |
| Net Investment Purchase And Sale | | 489930000.0 | -114970000.0 | -113582000.0 | -180428000.0 |
| Net Issuance Payments Of Debt | | 0.0 | 0.0 | 0.0 | 574960000.0 |
| Net Long Term Debt Issuance | | 0.0 | 0.0 | 0.0 | 1725000000.0 |
| Net Other Financing Charges | | -255000.0 | -217000.0 | -39000.0 | -221592000.0 |
| Net PPEPurchase And Sale | | -69296000.0 | -97197000.0 | -144588000.0 | -164252000.0 |
| Net Short Term Debt Issuance | | | 0.0 | 0.0 | -1150040000.0 |
| Operating Cash Flow | | 321912000.0 | 462343000.0 | 779846000.0 | 972453000.0 |
| Operating Gains Losses | | 1499000.0 | -3319000.0 | 753000.0 | 369000.0 |
| Other Non Cash Items | | 148194000.0 | 134004000.0 | 186818000.0 | 234588000.0 |
| Proceeds From Stock Option Exercised | | 41592000.0 | 46207000.0 | 64247000.0 | 67144000.0 |
| Purchase Of Business | | -25287000.0 | -15643000.0 | -374702000.0 | -834000.0 |
| Purchase Of Intangibles | 0.0 | | | | |
| Purchase Of Investment | | -844944000.0 | -1067349000.0 | -1293015000.0 | -1281453000.0 |
| Purchase Of PPE | | -69296000.0 | -97197000.0 | -144588000.0 | -164252000.0 |
| Repayment Of Debt | | | 0.0 | 0.0 | -1150040000.0 |
| Repurchase Of Capital Stock | 0.0 | | | | |
| Sale Of Investment | | 1334874000.0 | 952379000.0 | 1179433000.0 | 1101025000.0 |
| Short Term Debt Payments | | | 0.0 | 0.0 | -1150040000.0 |
| Stock Based Compensation | | 409562000.0 | 444834000.0 | 527676000.0 | 661350000.0 |
