| | 2020-09-30 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 |
| Amortization Of Securities | -386000.0 | | | | | | |
| Asset Impairment Charge | | 113000000.0 | 91000000.0 | 0.0 | 0.0 | | |
| Beginning Cash Position | | | 9727000000.0 | 12103000000.0 | 12667000000.0 | 18190000000.0 | 12760000000.0 |
| Capital Expenditure | | -25322000.0 | -25000000.0 | | | | |
| Cash Flow From Continuing Financing Activities | | | -689000000.0 | -2430000000.0 | -3572000000.0 | -4044000000.0 | -3827000000.0 |
| Cash Flow From Continuing Investing Activities | | | -28000000.0 | -1042000000.0 | -616000000.0 | -664000000.0 | -748000000.0 |
| Cash Flow From Continuing Operating Activities | | | 3430000000.0 | 3884000000.0 | 4518000000.0 | 4308000000.0 | 4646000000.0 |
| Change In Account Payable | | 39946000.0 | 20000000.0 | | | | |
| Change In Accrued Expense | | | 224000000.0 | 580000000.0 | -104000000.0 | -324000000.0 | 118000000.0 |
| Change In Other Current Assets | | 25156000.0 | 41000000.0 | | | | |
| Change In Other Current Liabilities | | -33774000.0 | -69000000.0 | | | | |
| Change In Other Working Capital | | | 280000000.0 | 242000000.0 | 200000000.0 | 237000000.0 | 122000000.0 |
| Change In Payable | | 39946000.0 | 20000000.0 | | | | |
| Change In Payables And Accrued Expense | | | 224000000.0 | 580000000.0 | -104000000.0 | -324000000.0 | 118000000.0 |
| Change In Prepaid Assets | | | -185000000.0 | -102000000.0 | -163000000.0 | -333000000.0 | -346000000.0 |
| Change In Working Capital | | | 319000000.0 | 720000000.0 | -67000000.0 | -420000000.0 | -106000000.0 |
| Changes In Cash | | | 2713000000.0 | 412000000.0 | 330000000.0 | -400000000.0 | 71000000.0 |
| Common Stock Issuance | | 0.0 | 0.0 | | | | |
| Common Stock Payments | | | -1500000000.0 | -2252000000.0 | -3430000000.0 | -3748000000.0 | -3789000000.0 |
| Deferred Income Tax | | | -1000000.0 | -2875000000.0 | 433000000.0 | 438000000.0 | 376000000.0 |
| Deferred Tax | | | -1000000.0 | -2875000000.0 | 433000000.0 | 438000000.0 | 376000000.0 |
| 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 | | | -337000000.0 | 152000000.0 | -237000000.0 | 654000000.0 | 655000000.0 |
| End Cash Position | | | 12103000000.0 | 12667000000.0 | 12760000000.0 | 17790000000.0 | 13486000000.0 |
| Financing Cash Flow | | | -689000000.0 | -2430000000.0 | -3572000000.0 | -4044000000.0 | -3827000000.0 |
| Free Cash Flow | | | 3430000000.0 | 3884000000.0 | 4518000000.0 | 4308000000.0 | 4646000000.0 |
| Gain Loss On Investment Securities | | 292000000.0 | -2000000.0 | | | | |
| Income Tax Paid Supplemental Data | | | 68000000.0 | 132000000.0 | 350000000.0 | 391000000.0 | 232000000.0 |
| Interest Paid Supplemental Data | | | 8000000.0 | 55000000.0 | 2000000.0 | | 2000000.0 |
| Investing Cash Flow | | | -28000000.0 | -1042000000.0 | -616000000.0 | -664000000.0 | -748000000.0 |
| 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 | | | -1500000000.0 | -2252000000.0 | -3430000000.0 | -3748000000.0 | -3789000000.0 |
| Net Foreign Currency Exchange Gain Loss | | 24371000.0 | 62000000.0 | | | | |
| Net Income From Continuing Operations | | | 1893000000.0 | 4792000000.0 | 2648000000.0 | 2625000000.0 | 2511000000.0 |
| Net Investment Purchase And Sale | | | -1000000.0 | -928000000.0 | -541000000.0 | -580000000.0 | -702000000.0 |
| 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 | | | 723000000.0 | -288000000.0 | -310000000.0 | -440000000.0 | -160000000.0 |
| Net Other Investing Changes | | | -27000000.0 | -114000000.0 | -75000000.0 | -84000000.0 | -46000000.0 |
| Net PPEPurchase And Sale | | -25322000.0 | -25000000.0 | | | | |
| Net Preferred Stock Issuance | 0.0 | | | | | | |
| Operating Cash Flow | | | 3430000000.0 | 3884000000.0 | 4518000000.0 | 4308000000.0 | 4646000000.0 |
| Operating Gains Losses | | 669000000.0 | 60000000.0 | | | | |
| Other Non Cash Items | | | 117000000.0 | 127000000.0 | 97000000.0 | 88000000.0 | 273000000.0 |
| Preferred Stock Issuance | 0.0 | | | | | | |
| Proceeds From Stock Option Exercised | | | 88000000.0 | 110000000.0 | 168000000.0 | 144000000.0 | 122000000.0 |
| Purchase Of Business | | 0.0 | | | | | |
| Purchase Of Investment | | | -4072000000.0 | -3308000000.0 | -3146000000.0 | -3269000000.0 | -3438000000.0 |
| Purchase Of PPE | | -25322000.0 | -25000000.0 | | | | |
| Repayment Of Debt | | -2208000000.0 | 0.0 | 0.0 | | | |
| Repurchase Of Capital Stock | | | -1500000000.0 | -2252000000.0 | -3430000000.0 | -3748000000.0 | -3789000000.0 |
| Sale Of Investment | | | 4071000000.0 | 2380000000.0 | 2605000000.0 | 2689000000.0 | 2736000000.0 |
| Stock Based Compensation | | | 930000000.0 | 1120000000.0 | 1407000000.0 | 1512000000.0 | 1592000000.0 |
