| | 2020-03-31 | 2020-09-30 | 2021-09-30 | 2022-09-30 | 2023-09-30 | 2024-09-30 |
| Amortization Cash Flow | | | | 90000000.0 | 76000000.0 | 79000000.0 |
| Amortization Of Intangibles | | | | 90000000.0 | 76000000.0 | 79000000.0 |
| Beginning Cash Position | | | 19171000000.0 | 19799000000.0 | 20377000000.0 | 21990000000.0 |
| Capital Expenditure | | | -705000000.0 | -970000000.0 | -1059000000.0 | -1257000000.0 |
| Cash Dividends Paid | | | -2798000000.0 | -3203000000.0 | -3751000000.0 | -4217000000.0 |
| Cash Flow From Continuing Financing Activities | | | -14410000000.0 | -12696000000.0 | -17772000000.0 | -20633000000.0 |
| Cash Flow From Continuing Investing Activities | | | -152000000.0 | -4288000000.0 | -2006000000.0 | -1926000000.0 |
| Cash Flow From Continuing Operating Activities | | | 15227000000.0 | 18849000000.0 | 20755000000.0 | 19950000000.0 |
| Change In Account Payable | | | 88000000.0 | 67000000.0 | 34000000.0 | 109000000.0 |
| Change In Accrued Expense | | | 999000000.0 | 1531000000.0 | 1586000000.0 | -704000000.0 |
| Change In Other Current Assets | | | -147000000.0 | -666000000.0 | -24000000.0 | -199000000.0 |
| Change In Other Working Capital | | | -7510000000.0 | -9351000000.0 | -11014000000.0 | -14067000000.0 |
| Change In Payable | | | 767000000.0 | 1323000000.0 | -160000000.0 | 1950000000.0 |
| Change In Payables And Accrued Expense | | | 1766000000.0 | 2854000000.0 | 1426000000.0 | 1246000000.0 |
| Change In Receivables | | | -811000000.0 | -494000000.0 | -410000000.0 | -2412000000.0 |
| Change In Working Capital | | | -6702000000.0 | -7657000000.0 | -10022000000.0 | -15432000000.0 |
| Changes In Account Receivables | | | -343000000.0 | -97000000.0 | -250000000.0 | -237000000.0 |
| Changes In Cash | | | 665000000.0 | 1865000000.0 | 977000000.0 | -2609000000.0 |
| Common Stock Dividend Paid | | -2664000000.0 | -2798000000.0 | -3203000000.0 | -3751000000.0 | -4217000000.0 |
| Common Stock Payments | | | -8676000000.0 | -11589000000.0 | -12101000000.0 | -16713000000.0 |
| Deferred Income Tax | | | 873000000.0 | -336000000.0 | -483000000.0 | -100000000.0 |
| Deferred Tax | | | 873000000.0 | -336000000.0 | -483000000.0 | -100000000.0 |
| Depreciation | | | | 771000000.0 | 867000000.0 | 955000000.0 |
| Depreciation Amortization Depletion | | | 804000000.0 | 861000000.0 | 943000000.0 | 1034000000.0 |
| Depreciation And Amortization | | | 804000000.0 | 861000000.0 | 943000000.0 | 1034000000.0 |
| Earnings Losses From Equity Investments | | | -712000000.0 | 264000000.0 | 104000000.0 | 94000000.0 |
| Effect Of Exchange Rate Changes | | | -37000000.0 | -1287000000.0 | 636000000.0 | 382000000.0 |
| End Cash Position | | | 19799000000.0 | 20377000000.0 | 21990000000.0 | 19763000000.0 |
| Financing Cash Flow | | | -14410000000.0 | -12696000000.0 | -17772000000.0 | -20633000000.0 |
| Free Cash Flow | | | 14522000000.0 | 17879000000.0 | 19696000000.0 | 18693000000.0 |
| Income Tax Paid Supplemental Data | | | 3012000000.0 | 3741000000.0 | 3433000000.0 | 5775000000.0 |
| Interest Paid Supplemental Data | | | 643000000.0 | 607000000.0 | 617000000.0 | 583000000.0 |
| Investing Cash Flow | | | -152000000.0 | -4288000000.0 | -2006000000.0 | -1926000000.0 |
| Issuance Of Debt | 1001000000.0 | | 0.0 | 3218000000.0 | 0.0 | 0.0 |
| Long Term Debt Issuance | | | 0.0 | 3218000000.0 | 0.0 | 0.0 |
| Long Term Debt Payments | | | -3000000000.0 | -1000000000.0 | -2250000000.0 | 0.0 |
| Net Business Purchase And Sale | | | -75000000.0 | -1948000000.0 | 0.0 | -915000000.0 |
| Net Common Stock Issuance | | | -8676000000.0 | -11589000000.0 | -12101000000.0 | -16713000000.0 |
| Net Income From Continuing Operations | | | 12311000000.0 | 14957000000.0 | 17273000000.0 | 19743000000.0 |
| Net Investment Purchase And Sale | | | 519000000.0 | -1498000000.0 | -922000000.0 | 339000000.0 |
| Net Issuance Payments Of Debt | | | -3000000000.0 | 2218000000.0 | -2250000000.0 | 0.0 |
| Net Long Term Debt Issuance | | | -3000000000.0 | 2218000000.0 | -2250000000.0 | 0.0 |
| Net Other Financing Charges | | -432000000.0 | | -318000000.0 | 70000000.0 | -38000000.0 |
| Net Other Investing Changes | | | 109000000.0 | 128000000.0 | -25000000.0 | -93000000.0 |
| Net PPEPurchase And Sale | | | -705000000.0 | -970000000.0 | -1059000000.0 | -1257000000.0 |
| Operating Cash Flow | | | 15227000000.0 | 18849000000.0 | 20755000000.0 | 19950000000.0 |
| Operating Gains Losses | | | -712000000.0 | 264000000.0 | 104000000.0 | 94000000.0 |
| Other Non Cash Items | | | 8111000000.0 | 10158000000.0 | 12175000000.0 | 13761000000.0 |
| Proceeds From Stock Option Exercised | | | 64000000.0 | 196000000.0 | 260000000.0 | 335000000.0 |
| Purchase Of Business | | | -75000000.0 | -1948000000.0 | 0.0 | -915000000.0 |
| Purchase Of Investment | | | -5182000000.0 | -6083000000.0 | -4484000000.0 | -4674000000.0 |
| Purchase Of PPE | | | -705000000.0 | -970000000.0 | -1059000000.0 | -1257000000.0 |
| Repayment Of Debt | | | -3000000000.0 | -1000000000.0 | -2250000000.0 | 0.0 |
| Repurchase Of Capital Stock | | | -8676000000.0 | -11589000000.0 | -12101000000.0 | -16713000000.0 |
| Sale Of Investment | | | 5701000000.0 | 4585000000.0 | 3562000000.0 | 5013000000.0 |
| Stock Based Compensation | | | 542000000.0 | 602000000.0 | 765000000.0 | 850000000.0 |
