| | 2020-09-30 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-09-30 |
| Amortization Of Securities | -386000.0 | | | | | | |
| Asset Impairment Charge | | 113000000.0 | 91000000.0 | 0.0 | 0.0 | | |
| Beginning Cash Position | | 7668000000.0 | 9727000000.0 | 12103000000.0 | 12667000000.0 | 18190000000.0 | 14198000000.0 |
| Capital Expenditure | | -25322000.0 | -25000000.0 | | | | |
| Cash Flow From Continuing Financing Activities | | 1308000000.0 | -689000000.0 | -2430000000.0 | -3572000000.0 | -4044000000.0 | -3707000000.0 |
| Cash Flow From Continuing Investing Activities | | -1352000000.0 | -28000000.0 | -1042000000.0 | -616000000.0 | -664000000.0 | -668000000.0 |
| Cash Flow From Continuing Operating Activities | | 2313000000.0 | 3430000000.0 | 3884000000.0 | 4518000000.0 | 4308000000.0 | 4586000000.0 |
| Change In Account Payable | | 39946000.0 | 20000000.0 | | | | |
| Change In Accrued Expense | | 294000000.0 | 224000000.0 | 580000000.0 | -104000000.0 | -324000000.0 | -93000000.0 |
| Change In Other Current Assets | | 25156000.0 | 41000000.0 | | | | |
| Change In Other Current Liabilities | | -33774000.0 | -69000000.0 | | | | |
| Change In Other Working Capital | | 496000000.0 | 280000000.0 | 242000000.0 | 200000000.0 | 237000000.0 | 165000000.0 |
| Change In Payable | | 39946000.0 | 20000000.0 | | | | |
| Change In Payables And Accrued Expense | | 294000000.0 | 224000000.0 | 580000000.0 | -104000000.0 | -324000000.0 | -93000000.0 |
| Change In Prepaid Assets | | -29000000.0 | -185000000.0 | -102000000.0 | -163000000.0 | -333000000.0 | -345000000.0 |
| Change In Working Capital | | 761000000.0 | 319000000.0 | 720000000.0 | -67000000.0 | -420000000.0 | -273000000.0 |
| Changes In Cash | | 2269000000.0 | 2713000000.0 | 412000000.0 | 330000000.0 | -400000000.0 | 211000000.0 |
| Common Stock Issuance | | 0.0 | 0.0 | | | | |
| Common Stock Payments | | 0.0 | -1500000000.0 | -2252000000.0 | -3430000000.0 | -3748000000.0 | -3532000000.0 |
| Deferred Income Tax | | 11000000.0 | -1000000.0 | -2875000000.0 | 433000000.0 | 438000000.0 | 465000000.0 |
| Deferred Tax | | 11000000.0 | -1000000.0 | -2875000000.0 | 433000000.0 | 438000000.0 | 465000000.0 |
| Depreciation Amortization Depletion | | 138000000.0 | 81000000.0 | 44000000.0 | 65000000.0 | | |
| Depreciation And Amortization | | 138000000.0 | 81000000.0 | 44000000.0 | 65000000.0 | | |
| Effect Of Exchange Rate Changes | | -210000000.0 | -337000000.0 | 152000000.0 | -237000000.0 | 654000000.0 | 304000000.0 |
| End Cash Position | | 9727000000.0 | 12103000000.0 | 12667000000.0 | 12760000000.0 | 17790000000.0 | 14409000000.0 |
| Financing Cash Flow | | 1308000000.0 | -689000000.0 | -2430000000.0 | -3572000000.0 | -4044000000.0 | -3707000000.0 |
| Free Cash Flow | | 2313000000.0 | 3430000000.0 | 3884000000.0 | 4518000000.0 | 4308000000.0 | 4586000000.0 |
| Gain Loss On Investment Securities | | 292000000.0 | -2000000.0 | | | | |
| Income Tax Paid Supplemental Data | | 17000000.0 | 68000000.0 | 132000000.0 | 350000000.0 | 391000000.0 | 228000000.0 |
| Interest Paid Supplemental Data | | 50000000.0 | 8000000.0 | 55000000.0 | 2000000.0 | | |
| Investing Cash Flow | | -1352000000.0 | -28000000.0 | -1042000000.0 | -616000000.0 | -664000000.0 | -668000000.0 |
| Issuance Of Capital Stock | | 0.0 | 0.0 | | | | |
| Issuance Of Debt | | 1979000000.0 | 0.0 | 0.0 | | | |
| Long Term Debt Issuance | | 1979000000.0 | 0.0 | 0.0 | | | |
| Long Term Debt Payments | | -2208000000.0 | 0.0 | 0.0 | | | |
| Net Business Purchase And Sale | | 0.0 | | | | | |
| Net Common Stock Issuance | | 0.0 | -1500000000.0 | -2252000000.0 | -3430000000.0 | -3748000000.0 | -3532000000.0 |
| Net Foreign Currency Exchange Gain Loss | | 24371000.0 | 62000000.0 | | | | |
| Net Income From Continuing Operations | | -352000000.0 | 1893000000.0 | 4792000000.0 | 2648000000.0 | 2625000000.0 | 2631000000.0 |
| Net Investment Purchase And Sale | | -1327000000.0 | -1000000.0 | -928000000.0 | -541000000.0 | -580000000.0 | -579000000.0 |
| Net Issuance Payments Of Debt | | -229000000.0 | 0.0 | 0.0 | | | |
| Net Long Term Debt Issuance | | -229000000.0 | 0.0 | 0.0 | | | |
| Net Other Financing Charges | | 1348000000.0 | 723000000.0 | -288000000.0 | -310000000.0 | -440000000.0 | -314000000.0 |
| Net Other Investing Changes | | -25000000.0 | -27000000.0 | -114000000.0 | -75000000.0 | -84000000.0 | -89000000.0 |
| Net PPEPurchase And Sale | | -25322000.0 | -25000000.0 | | | | |
| Net Preferred Stock Issuance | 0.0 | | | | | | |
| Operating Cash Flow | | 2313000000.0 | 3430000000.0 | 3884000000.0 | 4518000000.0 | 4308000000.0 | 4586000000.0 |
| Operating Gains Losses | | 669000000.0 | 60000000.0 | | | | |
| Other Non Cash Items | | 74000000.0 | 117000000.0 | 83000000.0 | 32000000.0 | 88000000.0 | 149000000.0 |
| Preferred Stock Issuance | 0.0 | | | | | | |
| Proceeds From Stock Option Exercised | | 189000000.0 | 88000000.0 | 110000000.0 | 168000000.0 | 144000000.0 | 139000000.0 |
| Purchase Of Business | | 0.0 | | | | | |
| Purchase Of Investment | | -4938000000.0 | -4072000000.0 | -3308000000.0 | -3146000000.0 | -3269000000.0 | -3357000000.0 |
| Purchase Of PPE | | -25322000.0 | -25000000.0 | | | | |
| Repayment Of Debt | | -2208000000.0 | 0.0 | 0.0 | | | |
| Repurchase Of Capital Stock | | 0.0 | -1500000000.0 | -2252000000.0 | -3430000000.0 | -3748000000.0 | -3532000000.0 |
| Sale Of Investment | | 3611000000.0 | 4071000000.0 | 2380000000.0 | 2605000000.0 | 2689000000.0 | 2778000000.0 |
| Stock Based Compensation | | 899000000.0 | 930000000.0 | 1120000000.0 | 1407000000.0 | 1512000000.0 | 1549000000.0 |
