| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-03-31 |
| Amortization Of Securities | | 54000000.0 | 31000000.0 | -61000000.0 | -95000000.0 | -87000000.0 |
| Beginning Cash Position | | 2636000000.0 | 6860000000.0 | 3217000000.0 | 2928000000.0 | 2071000000.0 |
| Capital Expenditure | | -284000000.0 | -400000000.0 | -707000000.0 | -1051000000.0 | -982000000.0 |
| Cash Flow From Continuing Financing Activities | | -873000000.0 | -3448000000.0 | -1377000000.0 | 56000000.0 | 46000000.0 |
| Cash Flow From Continuing Investing Activities | | -8523000000.0 | -5176000000.0 | 4206000000.0 | 1949000000.0 | 2561000000.0 |
| Cash Flow From Continuing Operating Activities | | 13620000000.0 | 4981000000.0 | -3118000000.0 | -3004000000.0 | -3052000000.0 |
| Change In Account Payable | | 204000000.0 | 240000000.0 | 13000000.0 | -69000000.0 | 78000000.0 |
| Change In Accrued Expense | | 989000000.0 | 612000000.0 | -340000000.0 | -385000000.0 | -368000000.0 |
| Change In Income Tax Payable | 0.0 | 876000000.0 | -828000000.0 | 15000000.0 | | |
| Change In Inventory | | -1394000000.0 | 492000000.0 | 747000000.0 | 83000000.0 | 168000000.0 |
| Change In Other Current Assets | | -58000000.0 | 21000000.0 | -605000000.0 | -53000000.0 | -60000000.0 |
| Change In Other Current Liabilities | | 140000000.0 | -754000000.0 | 639000000.0 | 106000000.0 | 21000000.0 |
| Change In Other Working Capital | | 2824000000.0 | -4157000000.0 | -2060000000.0 | -439000000.0 | -435000000.0 |
| Change In Payable | | 1080000000.0 | 240000000.0 | 13000000.0 | -69000000.0 | 78000000.0 |
| Change In Payables And Accrued Expense | | 2069000000.0 | 852000000.0 | -327000000.0 | -454000000.0 | -290000000.0 |
| Change In Prepaid Assets | | -489000000.0 | -2258000000.0 | 1802000000.0 | 145000000.0 | 188000000.0 |
| Change In Receivables | | -1784000000.0 | 1790000000.0 | 493000000.0 | 534000000.0 | 59000000.0 |
| Change In Tax Payable | 0.0 | 876000000.0 | -828000000.0 | 15000000.0 | | |
| Change In Working Capital | | 1308000000.0 | -4014000000.0 | 689000000.0 | -78000000.0 | -349000000.0 |
| Changes In Account Receivables | | -1784000000.0 | 1790000000.0 | 493000000.0 | 534000000.0 | 59000000.0 |
| Changes In Cash | | 4224000000.0 | -3643000000.0 | -289000000.0 | -999000000.0 | -445000000.0 |
| Common Stock Issuance | | 124000000.0 | 65000000.0 | 46000000.0 | 66000000.0 | 54000000.0 |
| Common Stock Payments | | -857000000.0 | -3329000000.0 | -1153000000.0 | 0.0 | |
| Deferred Income Tax | 0.0 | -318000000.0 | -559000000.0 | 828000000.0 | | |
| Deferred Tax | 0.0 | -318000000.0 | -559000000.0 | 828000000.0 | | |
| Depreciation Amortization Depletion | | 232000000.0 | 348000000.0 | 621000000.0 | 189000000.0 | 192000000.0 |
| Depreciation And Amortization | | 232000000.0 | 348000000.0 | 621000000.0 | 189000000.0 | 192000000.0 |
| Earnings Losses From Equity Investments | | 0.0 | 0.0 | 35000000.0 | 52000000.0 | 47000000.0 |
| End Cash Position | | 6860000000.0 | 3217000000.0 | 2928000000.0 | 1929000000.0 | 1626000000.0 |
| Financing Cash Flow | | -873000000.0 | -3448000000.0 | -1377000000.0 | 56000000.0 | 46000000.0 |
| Free Cash Flow | | 13336000000.0 | 4581000000.0 | -3825000000.0 | -4055000000.0 | -4034000000.0 |
| Gain Loss On Sale Of PPE | 238000.0 | | | | | |
| Income Tax Paid Supplemental Data | 1000000.0 | 480000000.0 | 2729000000.0 | | 197000000.0 | |
| Interest Paid Supplemental Data | | 14000000.0 | 25000000.0 | 39000000.0 | 24000000.0 | |
| Investing Cash Flow | | -8523000000.0 | -5176000000.0 | 4206000000.0 | 1949000000.0 | 2561000000.0 |
| Issuance Of Capital Stock | | 124000000.0 | 65000000.0 | 46000000.0 | 66000000.0 | 54000000.0 |
| Issuance Of Debt | 0.0 | | | | | |
| Long Term Debt Issuance | 0.0 | | | | | |
| Long Term Debt Payments | -6215000.0 | -140000000.0 | | | | |
| Net Business Purchase And Sale | | 0.0 | 0.0 | -85000000.0 | 0.0 | |
| Net Common Stock Issuance | | -733000000.0 | -3264000000.0 | -1107000000.0 | 66000000.0 | 54000000.0 |
| Net Income From Continuing Operations | | 12202000000.0 | 8362000000.0 | -4714000000.0 | -3561000000.0 | -3357000000.0 |
| Net Investment Purchase And Sale | | -8209000000.0 | -4736000000.0 | 5021000000.0 | 3000000000.0 | 3543000000.0 |
| Net Issuance Payments Of Debt | | -140000000.0 | -184000000.0 | -270000000.0 | -10000000.0 | -7000000.0 |
| Net Long Term Debt Issuance | | -140000000.0 | -184000000.0 | -270000000.0 | -10000000.0 | -7000000.0 |
| Net Other Investing Changes | | -30000000.0 | -40000000.0 | -23000000.0 | | |
| Net PPEPurchase And Sale | | -284000000.0 | -400000000.0 | -707000000.0 | -1051000000.0 | -972000000.0 |
| Net Preferred Stock Issuance | 0.0 | | | | | |
| Operating Cash Flow | | 13620000000.0 | 4981000000.0 | -3118000000.0 | -3004000000.0 | -3052000000.0 |
| Operating Gains Losses | 238000.0 | | | 35000000.0 | 52000000.0 | 47000000.0 |
| Other Non Cash Items | 62000000.0 | | 28000000.0 | 7000000.0 | 60000000.0 | 59000000.0 |
| Preferred Stock Issuance | 0.0 | | | | | |
| Preferred Stock Payments | 0.0 | | | | | |
| Proceeds From Stock Option Exercised | 179643000.0 | 124000000.0 | 65000000.0 | 46000000.0 | | |
| Purchase Of Business | | 0.0 | 0.0 | -85000000.0 | 0.0 | |
| Purchase Of Investment | | -12652000000.0 | -11435000000.0 | -3760000000.0 | -6529000000.0 | -5749000000.0 |
| Purchase Of PPE | | -284000000.0 | -400000000.0 | -707000000.0 | -1051000000.0 | -972000000.0 |
| Repayment Of Debt | -6215000.0 | -140000000.0 | | | | |
| Repurchase Of Capital Stock | | -857000000.0 | -3329000000.0 | -1153000000.0 | 0.0 | |
| Sale Of Investment | | 4443000000.0 | 6699000000.0 | 8781000000.0 | 9529000000.0 | 9292000000.0 |
| Stock Based Compensation | | 142000000.0 | 226000000.0 | 305000000.0 | 429000000.0 | 443000000.0 |
