| | 2020-10-31 | 2022-07-31 | 2023-07-31 | 2024-07-31 | 2025-07-31 | 2025-10-31 | 2026-07-31 |
| Amortization Of Securities | | | -52200000.0 | -60000000.0 | -41000000.0 | | -54000000.0 |
| Beginning Cash Position | | | 2124800000.0 | 1142000000.0 | 1547000000.0 | | 2279000000.0 |
| Capital Expenditure | | | -146300000.0 | -157000000.0 | -247000000.0 | | -440000000.0 |
| Capital Expenditure Reported | -196800000.0 | | | | | | |
| Cash Flow From Continuing Financing Activities | | | -1726300000.0 | -1343000000.0 | -779000000.0 | -550900000.0 | -1202000000.0 |
| Cash Flow From Continuing Investing Activities | | | -2033800000.0 | -1510000000.0 | -2205000000.0 | | -3104000000.0 |
| Cash Flow From Continuing Operating Activities | | | 2777500000.0 | 3258000000.0 | 3716000000.0 | | 4553000000.0 |
| Change In Account Payable | | | 1000000.0 | -15000000.0 | 107000000.0 | | 43000000.0 |
| Change In Accrued Expense | | | 9600000.0 | 389000000.0 | 198000000.0 | | 422000000.0 |
| Change In Other Working Capital | | | 1869800000.0 | 1690000000.0 | 684000000.0 | | 407000000.0 |
| Change In Payable | | | 1000000.0 | -15000000.0 | 107000000.0 | 7800000.0 | 43000000.0 |
| Change In Payables And Accrued Expense | | | 10600000.0 | 374000000.0 | 305000000.0 | | 465000000.0 |
| Change In Prepaid Assets | | | -270600000.0 | -134000000.0 | 88000000.0 | | -139000000.0 |
| Change In Receivables | | | -1059000000.0 | -1021000000.0 | -154000000.0 | | -154000000.0 |
| Change In Working Capital | | | 550800000.0 | 909000000.0 | 923000000.0 | | 579000000.0 |
| Changes In Account Receivables | | | -320300000.0 | -155000000.0 | -345000000.0 | | -335000000.0 |
| Changes In Cash | | | -982600000.0 | 405000000.0 | 732000000.0 | | 247000000.0 |
| Common Stock Payments | | | -272700000.0 | -567000000.0 | 0.0 | | -1000000000.0 |
| Deferred Income Tax | | | 12500000.0 | -2034000000.0 | -350000000.0 | | -19000000.0 |
| Deferred Tax | | | 12500000.0 | -2034000000.0 | -350000000.0 | | -19000000.0 |
| Depreciation | | | | 284000000.0 | 343000000.0 | | 855000000.0 |
| Depreciation Amortization Depletion | | | 282200000.0 | 284000000.0 | 343000000.0 | | 855000000.0 |
| Depreciation And Amortization | | | 282200000.0 | 284000000.0 | 343000000.0 | | 855000000.0 |
| Effect Of Exchange Rate Changes | | | | 0.0 | 0.0 | | -3000000.0 |
| End Cash Position | | | 1142200000.0 | 1547000000.0 | 2279000000.0 | | 2523000000.0 |
| Financing Cash Flow | | | -1726300000.0 | -1343000000.0 | -779000000.0 | | -1202000000.0 |
| Free Cash Flow | | | 2631200000.0 | 3101000000.0 | 3469000000.0 | | 4113000000.0 |
| Gain Loss On Sale Of PPE | | | 49900000.0 | 56000000.0 | 65000000.0 | | 75000000.0 |
| Income Tax Paid Supplemental Data | | | 147100000.0 | 342000000.0 | 505000000.0 | | 199000000.0 |
| Interest Paid Supplemental Data | | | 20200000.0 | 6000000.0 | 2000000.0 | | 0.0 |
| Investing Cash Flow | | | -2033800000.0 | -1510000000.0 | -2205000000.0 | | -3104000000.0 |
| Issuance Of Debt | | 0.0 | | 0.0 | 0.0 | | 10000000.0 |
| Long Term Debt Issuance | | 0.0 | | 0.0 | 0.0 | | 10000000.0 |
| Long Term Debt Payments | | -600000.0 | -1692000000.0 | -1033700000.0 | | | |
| Net Business Purchase And Sale | | | -204500000.0 | -611000000.0 | -1054000000.0 | | -4663000000.0 |
| Net Common Stock Issuance | | | -272700000.0 | -567000000.0 | 0.0 | | -1000000000.0 |
| Net Foreign Currency Exchange Gain Loss | | | | 0.0 | 0.0 | | 1000000.0 |
| Net Income From Continuing Operations | | | 439700000.0 | 2578000000.0 | 1134000000.0 | | 307000000.0 |
| Net Investment Purchase And Sale | | | -1683000000.0 | -742000000.0 | -904000000.0 | | 1999000000.0 |
| Net Issuance Payments Of Debt | | | -1692000000.0 | -1033000000.0 | -966000000.0 | | -150000000.0 |
| Net Long Term Debt Issuance | | | -1692000000.0 | 0.0 | 0.0 | | 10000000.0 |
| Net Other Financing Charges | | | -20400000.0 | -26000000.0 | -184000000.0 | | -317000000.0 |
| Net PPEPurchase And Sale | | | -146300000.0 | -157000000.0 | -247000000.0 | | -440000000.0 |
| Net Short Term Debt Issuance | | | -1692000000.0 | -1033000000.0 | -966000000.0 | | -160000000.0 |
| Operating Cash Flow | | | 2777500000.0 | 3258000000.0 | 3716000000.0 | | 4553000000.0 |
| Operating Gains Losses | | | 49900000.0 | 56000000.0 | 65000000.0 | | 76000000.0 |
| Other Non Cash Items | | | 420100000.0 | 449000000.0 | 347000000.0 | | 473000000.0 |
| Proceeds From Stock Option Exercised | | | 258800000.0 | 283000000.0 | 371000000.0 | | 265000000.0 |
| Purchase Of Business | | | -204500000.0 | -611000000.0 | -1054000000.0 | | -4663000000.0 |
| Purchase Of Investment | | | -5460400000.0 | -3551000000.0 | -3696000000.0 | | -3694000000.0 |
| Purchase Of PPE | | | -146300000.0 | -157000000.0 | -247000000.0 | | -440000000.0 |
| Repayment Of Debt | | | -1692000000.0 | -1033000000.0 | -966000000.0 | | -160000000.0 |
| Repurchase Of Capital Stock | | | -272700000.0 | -567000000.0 | 0.0 | | -1000000000.0 |
| Sale Of Investment | | | 3777400000.0 | 2809000000.0 | 2792000000.0 | | 5693000000.0 |
| Short Term Debt Payments | | | -1692000000.0 | -1033000000.0 | -966000000.0 | | -160000000.0 |
| Stock Based Compensation | | | 1074500000.0 | 1076000000.0 | 1295000000.0 | | 1774000000.0 |
| Unrealized Gain Loss On Investment Securities | | | | 0.0 | 0.0 | | 562000000.0 |
