| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 |
| Beginning Cash Position | | 399000000.0 | 408000000.0 | 586000000.0 | 681000000.0 |
| Capital Expenditure | | -208000000.0 | -2546000000.0 | -2596000000.0 | -2683000000.0 |
| Capital Expenditure Reported | | -208000000.0 | -2546000000.0 | -2596000000.0 | -2683000000.0 |
| Cash Dividends Paid | -43000000.0 | 0.0 | 0.0 | | |
| Cash Flow From Continuing Financing Activities | | 5288000000.0 | -2631000000.0 | -3206000000.0 | -2794000000.0 |
| Cash Flow From Continuing Investing Activities | | -5983000000.0 | 636000000.0 | -502000000.0 | -968000000.0 |
| Cash Flow From Continuing Operating Activities | | 704000000.0 | 2173000000.0 | 3803000000.0 | 3983000000.0 |
| Change In Account Payable | | | 360000000.0 | 209000000.0 | 257000000.0 |
| Change In Other Current Assets | | -402000000.0 | -775000000.0 | -11000000.0 | -314000000.0 |
| Change In Other Current Liabilities | | 1454000000.0 | 865000000.0 | -166000000.0 | 410000000.0 |
| Change In Other Working Capital | | -168000000.0 | 5000000.0 | 109000000.0 | 427000000.0 |
| Change In Payable | | | 360000000.0 | 209000000.0 | 257000000.0 |
| Change In Payables And Accrued Expense | | 461000000.0 | 360000000.0 | 209000000.0 | 257000000.0 |
| Change In Receivables | | -304000000.0 | -637000000.0 | 95000000.0 | 35000000.0 |
| Change In Working Capital | | 1041000000.0 | -182000000.0 | 236000000.0 | 815000000.0 |
| Changes In Account Receivables | | | -637000000.0 | 95000000.0 | 35000000.0 |
| Changes In Cash | | 9000000.0 | 178000000.0 | 95000000.0 | 221000000.0 |
| Common Stock Dividend Paid | -43000000.0 | 0.0 | 0.0 | | |
| Common Stock Issuance | 2970000000.0 | 460000000.0 | 0.0 | 0.0 | |
| Common Stock Payments | -173000000.0 | -18000000.0 | -21000000.0 | | |
| Deferred Income Tax | | -555000000.0 | 65000000.0 | 299000000.0 | 308000000.0 |
| Deferred Tax | | -555000000.0 | 65000000.0 | 299000000.0 | 308000000.0 |
| Depreciation Amortization Depletion | | 2335000000.0 | 2298000000.0 | 2254000000.0 | 2245000000.0 |
| Depreciation And Amortization | | 2335000000.0 | 2298000000.0 | 2254000000.0 | 2245000000.0 |
| End Cash Position | | 408000000.0 | 586000000.0 | 681000000.0 | 902000000.0 |
| Financing Cash Flow | | 5288000000.0 | -2631000000.0 | -3206000000.0 | -2794000000.0 |
| Free Cash Flow | | 496000000.0 | -373000000.0 | 1207000000.0 | 1300000000.0 |
| Gain Loss On Sale Of PPE | -95000000.0 | -22000000.0 | 0.0 | | |
| Income Tax Paid Supplemental Data | | | 2000000.0 | 6000000.0 | 8000000.0 |
| Interest Paid Supplemental Data | | | 1852000000.0 | 2180000000.0 | 1933000000.0 |
| Investing Cash Flow | | -5983000000.0 | 636000000.0 | -502000000.0 | -968000000.0 |
| Issuance Of Capital Stock | 2970000000.0 | 460000000.0 | 0.0 | 0.0 | |
| Issuance Of Debt | | 12190000000.0 | 1069000000.0 | 4822000000.0 | 1670000000.0 |
| Long Term Debt Issuance | | 12190000000.0 | 1069000000.0 | 4822000000.0 | 1670000000.0 |
| Long Term Debt Payments | | -7343000000.0 | -3752000000.0 | -7718000000.0 | -4467000000.0 |
| Net Business Purchase And Sale | | -28000000.0 | -321000000.0 | 0.0 | 0.0 |
| Net Common Stock Issuance | 2797000000.0 | 460000000.0 | -21000000.0 | 0.0 | |
| Net Income From Continuing Operations | | -1993000000.0 | 127000000.0 | 822000000.0 | 846000000.0 |
| Net Investment Purchase And Sale | | -5531000000.0 | 3715000000.0 | 1538000000.0 | 819000000.0 |
| Net Issuance Payments Of Debt | | 4847000000.0 | -2683000000.0 | -2896000000.0 | -2797000000.0 |
| Net Long Term Debt Issuance | | 4847000000.0 | -2683000000.0 | -2896000000.0 | -2797000000.0 |
| Net Other Financing Charges | | -19000000.0 | 52000000.0 | -310000000.0 | 3000000.0 |
| Net Other Investing Changes | | -590000000.0 | -359000000.0 | 326000000.0 | 242000000.0 |
| Net PPEPurchase And Sale | | 374000000.0 | 147000000.0 | 230000000.0 | 654000000.0 |
| Operating Cash Flow | | 704000000.0 | 2173000000.0 | 3803000000.0 | 3983000000.0 |
| Operating Gains Losses | | -290000000.0 | -402000000.0 | 254000000.0 | -73000000.0 |
| Other Non Cash Items | | 68000000.0 | 189000000.0 | -164000000.0 | -250000000.0 |
| Pension And Employee Benefit Expense | | -321000000.0 | -405000000.0 | -13000000.0 | -82000000.0 |
| Proceeds From Stock Option Exercised | -173000000.0 | | | | |
| Purchase Of Business | | -28000000.0 | -321000000.0 | 0.0 | 0.0 |
| Purchase Of Investment | | -19454000000.0 | -11257000000.0 | -7323000000.0 | -7194000000.0 |
| Purchase Of PPE | -173000000.0 | -204000000.0 | -360000000.0 | | |
| Repayment Of Debt | | -7343000000.0 | -3752000000.0 | -7718000000.0 | -4467000000.0 |
| Repurchase Of Capital Stock | -173000000.0 | -18000000.0 | -21000000.0 | | |
| Sale Of Business | 41000000.0 | 5000000.0 | | | |
| Sale Of Investment | | 13923000000.0 | 14972000000.0 | 8861000000.0 | 8013000000.0 |
| Sale Of PPE | | 374000000.0 | 147000000.0 | 230000000.0 | 654000000.0 |
| Stock Based Compensation | | 98000000.0 | 78000000.0 | 102000000.0 | 92000000.0 |
