| | 2020-09-30 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-09-30 |
| Asset Impairment Charge | | 0.0 | 0.0 | | | | |
| Beginning Cash Position | | 108000000.0 | 672000000.0 | 164000000.0 | 585000000.0 | 6911000000.0 | 373000000.0 |
| Capital Expenditure | | -2274000000.0 | -3613000000.0 | -4714000000.0 | -11787000000.0 | -16019000000.0 | -9850000000.0 |
| Cash Dividends Paid | | -312000000.0 | -1572000000.0 | -1444000000.0 | -1578000000.0 | -1259000000.0 | -1132000000.0 |
| Cash Flow From Continuing Financing Activities | | -1841000000.0 | -3503000000.0 | -2176000000.0 | 4387000000.0 | 1381000000.0 | 969000000.0 |
| Cash Flow From Continuing Investing Activities | | -1539000000.0 | -3330000000.0 | -3323000000.0 | -11221000000.0 | -15653000000.0 | -9546000000.0 |
| Cash Flow From Continuing Operating Activities | | 3944000000.0 | 6325000000.0 | 5920000000.0 | 6413000000.0 | 7582000000.0 | 8756000000.0 |
| Change In Account Payable | | -41000000.0 | -47000000.0 | 57000000.0 | -376000000.0 | -664000000.0 | -241000000.0 |
| Change In Accrued Expense | 58000000.0 | | | | | | |
| Change In Income Tax Payable | | 0.0 | 17000000.0 | -5000000.0 | 87000000.0 | -207000000.0 | -377000000.0 |
| Change In Interest Payable | 58000000.0 | | | | | | |
| Change In Other Working Capital | | -47000000.0 | -16000000.0 | -2000000.0 | 4000000.0 | -32000000.0 | -46000000.0 |
| Change In Payable | | 107000000.0 | 126000000.0 | 175000000.0 | -121000000.0 | -747000000.0 | -531000000.0 |
| Change In Payables And Accrued Expense | | 107000000.0 | 126000000.0 | 175000000.0 | -121000000.0 | -747000000.0 | -531000000.0 |
| Change In Prepaid Assets | | 20000000.0 | 21000000.0 | -89000000.0 | 54000000.0 | -51000000.0 | -89000000.0 |
| Change In Receivables | | -44000000.0 | -330000000.0 | 212000000.0 | -33000000.0 | 163000000.0 | 35000000.0 |
| Change In Tax Payable | | 0.0 | 17000000.0 | -5000000.0 | 87000000.0 | -207000000.0 | -377000000.0 |
| Change In Working Capital | | 36000000.0 | -199000000.0 | 296000000.0 | -96000000.0 | -667000000.0 | -631000000.0 |
| Changes In Account Receivables | | -196000000.0 | -47000000.0 | -71000000.0 | -42000000.0 | 163000000.0 | 35000000.0 |
| Changes In Cash | | 564000000.0 | -508000000.0 | 421000000.0 | -421000000.0 | -6690000000.0 | 179000000.0 |
| Common Stock Dividend Paid | | -312000000.0 | -1572000000.0 | -1444000000.0 | -1578000000.0 | -1259000000.0 | -1132000000.0 |
| Common Stock Issuance | | 0.0 | 0.0 | 0.0 | 476000000.0 | 1708000000.0 | 1232000000.0 |
| Common Stock Payments | | -525000000.0 | -1251000000.0 | -935000000.0 | -959000000.0 | -1890000000.0 | -1978000000.0 |
| Deferred Income Tax | | 606000000.0 | 720000000.0 | 378000000.0 | 15000000.0 | -132000000.0 | 70000000.0 |
| Deferred Tax | | 606000000.0 | 720000000.0 | 378000000.0 | 15000000.0 | -132000000.0 | 70000000.0 |
| Depreciation | | 1275000000.0 | 1344000000.0 | 1746000000.0 | 2850000000.0 | 4251000000.0 | 4791000000.0 |
| Depreciation Amortization Depletion | | 1275000000.0 | 1344000000.0 | 1746000000.0 | 2850000000.0 | 4251000000.0 | 4792000000.0 |
| Depreciation And Amortization | | 1275000000.0 | 1344000000.0 | 1746000000.0 | 2850000000.0 | 4251000000.0 | 4792000000.0 |
| Dividends Received CFI | | 9000000.0 | | | | | |
| Earnings Losses From Equity Investments | | -15000000.0 | -77000000.0 | -48000000.0 | -21000000.0 | -16000000.0 | -18000000.0 |
| End Cash Position | | 672000000.0 | 164000000.0 | 585000000.0 | 164000000.0 | 221000000.0 | 552000000.0 |
| Financing Cash Flow | | -1841000000.0 | -3503000000.0 | -2176000000.0 | 4387000000.0 | 1381000000.0 | 969000000.0 |
| Free Cash Flow | | 1670000000.0 | 2712000000.0 | 1206000000.0 | -5374000000.0 | -8437000000.0 | -1094000000.0 |
| Gain Loss On Investment Securities | | -399000000.0 | -264000000.0 | 149000000.0 | -188000000.0 | -167000000.0 | -92000000.0 |
| Income Tax Paid Supplemental Data | | | 718000000.0 | 352000000.0 | 605000000.0 | 1269000000.0 | 1630000000.0 |
| Interest Paid Supplemental Data | | 194000000.0 | 135000000.0 | 146000000.0 | 269000000.0 | | |
| Investing Cash Flow | | -1539000000.0 | -3330000000.0 | -3323000000.0 | -11221000000.0 | -15653000000.0 | -9546000000.0 |
| Issuance Of Capital Stock | | 0.0 | 0.0 | 0.0 | 476000000.0 | 1708000000.0 | 1232000000.0 |
| Issuance Of Debt | | 3513000000.0 | 7704000000.0 | 5179000000.0 | 9875000000.0 | 12823000000.0 | 15212000000.0 |
| Long Term Debt Issuance | | 2200000000.0 | 7704000000.0 | 5179000000.0 | 9875000000.0 | 7075000000.0 | 8175000000.0 |
| Long Term Debt Payments | | -3193000000.0 | -7961000000.0 | -4802000000.0 | -3502000000.0 | -4621000000.0 | -5049000000.0 |
| Net Business Purchase And Sale | | -114000000.0 | | | | | |
| Net Common Stock Issuance | | -525000000.0 | -1251000000.0 | -935000000.0 | -483000000.0 | -182000000.0 | -746000000.0 |
| Net Income From Continuing Operations | | 2276000000.0 | 4562000000.0 | 3336000000.0 | 3701000000.0 | 4228000000.0 | 4603000000.0 |
| Net Issuance Payments Of Debt | | -680000000.0 | -257000000.0 | 377000000.0 | 6373000000.0 | 3199000000.0 | 3348000000.0 |
| Net Long Term Debt Issuance | | -993000000.0 | -257000000.0 | 377000000.0 | 6373000000.0 | 2454000000.0 | 3126000000.0 |
| Net Other Financing Charges | | -324000000.0 | -423000000.0 | -174000000.0 | 75000000.0 | -377000000.0 | -501000000.0 |
| Net Other Investing Changes | | 735000000.0 | 283000000.0 | 1391000000.0 | 566000000.0 | 366000000.0 | 304000000.0 |
| Net PPEPurchase And Sale | | -2274000000.0 | -3613000000.0 | -4714000000.0 | -11787000000.0 | -16019000000.0 | -9850000000.0 |
| Net Short Term Debt Issuance | | 313000000.0 | -347000000.0 | 111000000.0 | | | |
| Operating Cash Flow | | 3944000000.0 | 6325000000.0 | 5920000000.0 | 6413000000.0 | 7582000000.0 | 8756000000.0 |
| Operating Gains Losses | | -339000000.0 | -242000000.0 | 105000000.0 | -211000000.0 | -238000000.0 | -133000000.0 |
| Other Non Cash Items | | 39000000.0 | 85000000.0 | 5000000.0 | 89000000.0 | 69000000.0 | -22000000.0 |
| Purchase Of Business | | -114000000.0 | | | | | |
| Purchase Of PPE | | -2274000000.0 | -3613000000.0 | -4714000000.0 | -11787000000.0 | -16019000000.0 | -9850000000.0 |
| Repayment Of Debt | | -4193000000.0 | -7961000000.0 | -4802000000.0 | -3502000000.0 | -9624000000.0 | -11864000000.0 |
| Repurchase Of Capital Stock | | -525000000.0 | -1251000000.0 | -935000000.0 | -959000000.0 | -1890000000.0 | -1978000000.0 |
| Short Term Debt Issuance | | 1313000000.0 | 5204000000.0 | 4779000000.0 | | | |
| Short Term Debt Payments | | -1000000000.0 | -5551000000.0 | -4668000000.0 | | | |
| Stock Based Compensation | | 51000000.0 | 55000000.0 | 54000000.0 | 65000000.0 | 71000000.0 | 77000000.0 |
