| | 2019-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-12-31 |
| Asset Impairment Charge | | | 0.0 | 209000000.0 | 355000000.0 | 21000000.0 |
| Beginning Cash Position | | | 2803000000.0 | 1026000000.0 | 1464000000.0 | 2157000000.0 |
| Capital Expenditure | | | -4497000000.0 | -5696000000.0 | -6263000000.0 | -6427000000.0 |
| Capital Expenditure Reported | | | -4497000000.0 | -5696000000.0 | -6263000000.0 | -6427000000.0 |
| Cash Dividends Paid | | | -1184000000.0 | -1365000000.0 | -1446000000.0 | -1594000000.0 |
| Cash Flow From Continuing Financing Activities | | | -13715000000.0 | -4886000000.0 | 3849000000.0 | -4835000000.0 |
| Cash Flow From Continuing Investing Activities | | | -4872000000.0 | -6463000000.0 | -13821000000.0 | -4683000000.0 |
| Cash Flow From Continuing Operating Activities | | | 16810000000.0 | 10235000000.0 | 10519000000.0 | 9606000000.0 |
| Cash From Discontinued Financing Activities | | | 0.0 | -4000000.0 | -5000000.0 | -9000000.0 |
| Cash From Discontinued Investing Activities | | | 0.0 | -517000000.0 | -769000000.0 | -1116000000.0 |
| Cash From Discontinued Operating Activities | | | 0.0 | 2073000000.0 | 920000000.0 | 926000000.0 |
| Change In Inventory | | | -230000000.0 | -84000000.0 | -27000000.0 | 12000000.0 |
| Change In Other Current Assets | | -119000000.0 | -335000000.0 | -13000000.0 | | |
| Change In Other Working Capital | 1071000000.0 | | -185000000.0 | 66000000.0 | 472000000.0 | -305000000.0 |
| Change In Payables And Accrued Expense | | | -478000000.0 | -423000000.0 | -540000000.0 | -964000000.0 |
| Change In Receivables | | | -432000000.0 | 581000000.0 | 170000000.0 | 190000000.0 |
| Change In Working Capital | | | -1325000000.0 | 140000000.0 | 75000000.0 | -1067000000.0 |
| Changes In Account Receivables | | | -97000000.0 | 931000000.0 | -116000000.0 | 252000000.0 |
| Changes In Cash | | | -1777000000.0 | 438000000.0 | 693000000.0 | -111000000.0 |
| Common Stock Issuance | | | 293000000.0 | 135000000.0 | 584000000.0 | 966000000.0 |
| Common Stock Payments | | | -3099000000.0 | -1798000000.0 | -27000000.0 | 0.0 |
| Deferred Income Tax | | | -1644000000.0 | 54000000.0 | -265000000.0 | 127000000.0 |
| Deferred Tax | | | -1644000000.0 | 54000000.0 | -265000000.0 | 127000000.0 |
| Depreciation Amortization Depletion | | | 6926000000.0 | 6449000000.0 | 6951000000.0 | 7533000000.0 |
| Earnings Losses From Equity Investments | | | -219000000.0 | 141000000.0 | -83000000.0 | 619000000.0 |
| End Cash Position | | | 1026000000.0 | 1464000000.0 | 2157000000.0 | 2046000000.0 |
| Financing Cash Flow | | | -13715000000.0 | -4890000000.0 | 3844000000.0 | -4844000000.0 |
| Free Cash Flow | | | 12313000000.0 | 6612000000.0 | 5176000000.0 | 4105000000.0 |
| Gain Loss On Investment Securities | | -192000000.0 | -308000000.0 | | | |
| Gain Loss On Sale Of Business | | -192000000.0 | -308000000.0 | | | |
| Income Tax Paid Supplemental Data | | 763000000.0 | 2184000000.0 | 1299000000.0 | 1203000000.0 | |
| Interest Paid Supplemental Data | | | 1425000000.0 | 1017000000.0 | 1052000000.0 | 1250000000.0 |
| Investing Cash Flow | | | -4872000000.0 | -6980000000.0 | -14590000000.0 | -5799000000.0 |
| Issuance Of Capital Stock | | | 293000000.0 | 135000000.0 | 584000000.0 | 966000000.0 |
| Issuance Of Debt | | | 400000000.0 | 283000000.0 | 9612000000.0 | 0.0 |
| Long Term Debt Issuance | | | 400000000.0 | 283000000.0 | 9612000000.0 | 0.0 |
| Long Term Debt Payments | | | -9884000000.0 | -351000000.0 | -4514000000.0 | -3754000000.0 |
| Net Business Purchase And Sale | | | -116000000.0 | -1192000000.0 | -9331000000.0 | -566000000.0 |
| Net Common Stock Issuance | | | -2806000000.0 | -1663000000.0 | 557000000.0 | 966000000.0 |
| Net Income From Continuing Operations | | | 13304000000.0 | 4696000000.0 | 3078000000.0 | 2369000000.0 |
| Net Issuance Payments Of Debt | | | -9484000000.0 | -68000000.0 | 5098000000.0 | -3754000000.0 |
| Net Long Term Debt Issuance | | | -9484000000.0 | -68000000.0 | 5098000000.0 | -3754000000.0 |
| Net Other Financing Charges | | | -241000000.0 | -129000000.0 | -360000000.0 | -453000000.0 |
| Net Other Investing Changes | | | -259000000.0 | 425000000.0 | 1773000000.0 | 2310000000.0 |
| Net Preferred Stock Issuance | | | 0.0 | -1661000000.0 | 0.0 | 0.0 |
| Operating Cash Flow | | | 16810000000.0 | 12308000000.0 | 11439000000.0 | 10532000000.0 |
| Operating Gains Losses | | | -527000000.0 | -381000000.0 | -23000000.0 | 356000000.0 |
| Other Non Cash Items | | | 76000000.0 | -932000000.0 | 348000000.0 | 267000000.0 |
| Preferred Stock Issuance | 9950000000.0 | | | | | |
| Preferred Stock Payments | | | 0.0 | -1661000000.0 | 0.0 | 0.0 |
| Purchase Of Business | | -431000000.0 | -990000000.0 | | -9117000000.0 | -280000000.0 |
| Repayment Of Debt | | | -9884000000.0 | -351000000.0 | -4514000000.0 | -3754000000.0 |
| Repurchase Of Capital Stock | | | -3099000000.0 | -3459000000.0 | -27000000.0 | 0.0 |