| | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 | 2026-06-30 |
| Beginning Cash Position | | 408000000.0 | 586000000.0 | 681000000.0 | 740000000.0 | 902000000.0 | 931000000.0 |
| Capital Expenditure | | -2546000000.0 | -2596000000.0 | -2683000000.0 | -2531000000.0 | -3779000000.0 | -4089000000.0 |
| Capital Expenditure Reported | | -2546000000.0 | -2596000000.0 | -2683000000.0 | -2531000000.0 | -3779000000.0 | -4089000000.0 |
| Cash Dividends Paid | 0.0 | 0.0 | | | | | |
| Cash Flow From Continuing Financing Activities | | -2631000000.0 | -3206000000.0 | -2794000000.0 | -2349000000.0 | -1051000000.0 | -1304000000.0 |
| Cash Flow From Continuing Investing Activities | | 636000000.0 | -502000000.0 | -968000000.0 | -1554000000.0 | -1894000000.0 | -2855000000.0 |
| Cash Flow From Continuing Operating Activities | | 2173000000.0 | 3803000000.0 | 3983000000.0 | | 3099000000.0 | |
| Change In Account Payable | | 360000000.0 | 209000000.0 | 257000000.0 | | 335000000.0 | |
| Change In Other Current Assets | | -775000000.0 | -11000000.0 | -314000000.0 | | -218000000.0 | |
| Change In Other Current Liabilities | | 865000000.0 | -166000000.0 | 410000000.0 | | 421000000.0 | |
| Change In Other Working Capital | | 10000000.0 | 182000000.0 | 727000000.0 | | 510000000.0 | |
| Change In Payable | | 360000000.0 | 209000000.0 | 257000000.0 | | 335000000.0 | |
| Change In Payables And Accrued Expense | | 360000000.0 | 209000000.0 | 257000000.0 | | 335000000.0 | |
| Change In Receivables | | -637000000.0 | 95000000.0 | 35000000.0 | | -74000000.0 | |
| Change In Working Capital | | -177000000.0 | 309000000.0 | 1115000000.0 | | 974000000.0 | |
| Changes In Account Receivables | | -637000000.0 | 95000000.0 | 35000000.0 | | -74000000.0 | |
| Changes In Cash | | 178000000.0 | 95000000.0 | 221000000.0 | 191000000.0 | 154000000.0 | 215000000.0 |
| Common Stock Dividend Paid | 0.0 | 0.0 | | | | | |
| Common Stock Issuance | 460000000.0 | 0.0 | 0.0 | | | | |
| Common Stock Payments | -18000000.0 | -21000000.0 | | | | | |
| Deferred Income Tax | | 65000000.0 | 299000000.0 | 308000000.0 | | 79000000.0 | |
| Deferred Tax | | 65000000.0 | 299000000.0 | 308000000.0 | | 79000000.0 | |
| Depreciation Amortization Depletion | | 2298000000.0 | 2254000000.0 | 2245000000.0 | | 2219000000.0 | |
| Depreciation And Amortization | | 2298000000.0 | 2254000000.0 | 2245000000.0 | | 2219000000.0 | |
| End Cash Position | | 586000000.0 | 681000000.0 | 902000000.0 | 931000000.0 | 1056000000.0 | 1146000000.0 |
| Financing Cash Flow | | -2631000000.0 | -3206000000.0 | -2794000000.0 | -2349000000.0 | -1051000000.0 | -1304000000.0 |
| Free Cash Flow | | -373000000.0 | 1207000000.0 | 1300000000.0 | 1563000000.0 | -680000000.0 | 285000000.0 |
| Gain Loss On Sale Of PPE | -22000000.0 | 0.0 | | | | | |
| Income Tax Paid Supplemental Data | 3000000.0 | 2000000.0 | 6000000.0 | 8000000.0 | 12000000.0 | | |
| Interest Paid Supplemental Data | | 1852000000.0 | 2180000000.0 | 1933000000.0 | 1786000000.0 | 1696000000.0 | 1627000000.0 |
| Investing Cash Flow | | 636000000.0 | -502000000.0 | -968000000.0 | -1554000000.0 | -1894000000.0 | -2855000000.0 |
| Issuance Of Capital Stock | 460000000.0 | 0.0 | 0.0 | | | | |
| Issuance Of Debt | | 1069000000.0 | 4822000000.0 | 1744000000.0 | 2802000000.0 | 4613000000.0 | 7472000000.0 |
| Long Term Debt Issuance | | 1069000000.0 | 4822000000.0 | 1670000000.0 | 2802000000.0 | 3773000000.0 | 6632000000.0 |
| Long Term Debt Payments | | -3752000000.0 | -7718000000.0 | -4467000000.0 | -4996000000.0 | -5504000000.0 | -7790000000.0 |
| Net Business Purchase And Sale | -28000000.0 | -321000000.0 | 0.0 | 0.0 | | | |
| Net Common Stock Issuance | 460000000.0 | 0.0 | 0.0 | | | | |
| Net Income From Continuing Operations | | 127000000.0 | 822000000.0 | 846000000.0 | | 111000000.0 | |
| Net Investment Purchase And Sale | | 3715000000.0 | 1538000000.0 | 819000000.0 | 91000000.0 | 1284000000.0 | 988000000.0 |
| Net Issuance Payments Of Debt | | -2683000000.0 | -2896000000.0 | -2723000000.0 | -2194000000.0 | -891000000.0 | -1158000000.0 |
| Net Long Term Debt Issuance | | -2683000000.0 | -2896000000.0 | -2797000000.0 | -2194000000.0 | -1731000000.0 | -1158000000.0 |
| Net Other Financing Charges | | 52000000.0 | -310000000.0 | -71000000.0 | -155000000.0 | -160000000.0 | -146000000.0 |
| Net Other Investing Changes | | -359000000.0 | 326000000.0 | 242000000.0 | 385000000.0 | 257000000.0 | 42000000.0 |
| Net PPEPurchase And Sale | | 147000000.0 | 230000000.0 | 654000000.0 | 501000000.0 | 344000000.0 | 204000000.0 |
| Net Short Term Debt Issuance | | | 0.0 | 74000000.0 | | 840000000.0 | 0.0 |
| Operating Cash Flow | | 2173000000.0 | 3803000000.0 | 3983000000.0 | 4094000000.0 | 3099000000.0 | 4374000000.0 |
| Operating Gains Losses | | -402000000.0 | 254000000.0 | -73000000.0 | | -11000000.0 | |
| Other Non Cash Items | | 184000000.0 | -237000000.0 | -550000000.0 | | -330000000.0 | |
| Pension And Employee Benefit Expense | | -405000000.0 | -13000000.0 | -82000000.0 | | -31000000.0 | |
| Proceeds From Stock Option Exercised | -18000000.0 | -21000000.0 | | | | | |
| Purchase Of Business | -28000000.0 | -321000000.0 | 0.0 | 0.0 | | | |
| Purchase Of Investment | | -11257000000.0 | -7323000000.0 | -7194000000.0 | -7160000000.0 | -4905000000.0 | -3922000000.0 |
| Purchase Of PPE | -204000000.0 | -360000000.0 | | | | | |
| Repayment Of Debt | | -3752000000.0 | -7718000000.0 | -4467000000.0 | -4996000000.0 | -5504000000.0 | -8630000000.0 |
| Repurchase Of Capital Stock | -18000000.0 | -21000000.0 | | | | | |
| Sale Of Business | 5000000.0 | | | | | | |
| Sale Of Investment | | 14972000000.0 | 8861000000.0 | 8013000000.0 | 7251000000.0 | 6189000000.0 | 4910000000.0 |
| Sale Of PPE | | 147000000.0 | 230000000.0 | 654000000.0 | 501000000.0 | 344000000.0 | 204000000.0 |
| Short Term Debt Issuance | | | 0.0 | 74000000.0 | | 840000000.0 | |
| Stock Based Compensation | | 78000000.0 | 102000000.0 | 92000000.0 | | 57000000.0 | |
