| | 2019-12-31 | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-03-31 |
| Asset Impairment Charge | | 8426000000.0 | 0.0 | 0.0 | | | |
| Beginning Cash Position | | | 416000000.0 | 5294000000.0 | 8631000000.0 | 5446000000.0 | 3177000000.0 |
| Capital Expenditure | | | -1464000000.0 | -2420000000.0 | -1890000000.0 | -2533000000.0 | -2611000000.0 |
| Cash Dividends Paid | | | -1484000000.0 | -1279000000.0 | -1261000000.0 | -1154000000.0 | -1140000000.0 |
| Cash Flow From Continuing Financing Activities | | | -14419000000.0 | -13647000000.0 | -14207000000.0 | -12434000000.0 | -7868000000.0 |
| Cash Flow From Continuing Investing Activities | | | -6517000000.0 | 623000000.0 | -3095000000.0 | 1534000000.0 | 1435000000.0 |
| Cash Flow From Continuing Operating Activities | | | 8384000000.0 | 16319000000.0 | 14117000000.0 | 8665000000.0 | 7069000000.0 |
| Cash Flow From Discontinued Operation | | -6000000.0 | 140000000.0 | 0.0 | 0.0 | | |
| Cash From Discontinued Investing Activities | | -335000000.0 | 21314000000.0 | 0.0 | 0.0 | | |
| Cash From Discontinued Operating Activities | | | -4024000000.0 | 42000000.0 | 0.0 | 0.0 | |
| Change In Inventory | | | -33000000.0 | -787000000.0 | -489000000.0 | -270000000.0 | -728000000.0 |
| Change In Other Working Capital | | | 3000000.0 | 1972000000.0 | -1325000000.0 | -448000000.0 | -658000000.0 |
| Change In Payables And Accrued Expense | | -2927000000.0 | 6260000000.0 | 1909000000.0 | -1316000000.0 | | |
| Change In Receivables | | | -5299000000.0 | -2858000000.0 | 2109000000.0 | 1117000000.0 | 1153000000.0 |
| Change In Working Capital | | | 931000000.0 | -1673000000.0 | 295000000.0 | 399000000.0 | -233000000.0 |
| Changes In Account Receivables | | 1465000000.0 | | | | | |
| Changes In Cash | | | 4878000000.0 | 3337000000.0 | -3185000000.0 | -2235000000.0 | 636000000.0 |
| Common Stock Dividend Paid | | | -1484000000.0 | -1279000000.0 | -1261000000.0 | -1154000000.0 | -1140000000.0 |
| Common Stock Issuance | | | 106000000.0 | 243000000.0 | 62000000.0 | 25000000.0 | 37000000.0 |
| Common Stock Payments | | | -4654000000.0 | -11922000000.0 | -11572000000.0 | -9189000000.0 | -8028000000.0 |
| Deferred Income Tax | | | 1920000000.0 | 290000000.0 | -28000000.0 | -124000000.0 | -117000000.0 |
| Deferred Tax | | | 1920000000.0 | 290000000.0 | -28000000.0 | -124000000.0 | -117000000.0 |
| Depreciation Amortization Depletion | | | 3364000000.0 | 3215000000.0 | 3307000000.0 | 3337000000.0 | 3303000000.0 |
| Depreciation And Amortization | | | 3364000000.0 | 3215000000.0 | 3307000000.0 | 3337000000.0 | 3303000000.0 |
| Dividend Received CFO | | | 652000000.0 | 772000000.0 | 941000000.0 | 1215000000.0 | 1180000000.0 |
| Earnings Losses From Equity Investments | | | -458000000.0 | -655000000.0 | -742000000.0 | -1048000000.0 | -1074000000.0 |
| End Cash Position | | | 5294000000.0 | 8631000000.0 | 5446000000.0 | 3211000000.0 | 3813000000.0 |
| Financing Cash Flow | | | -14419000000.0 | -13647000000.0 | -14207000000.0 | -12434000000.0 | -7868000000.0 |
| Free Cash Flow | | | 2896000000.0 | 13941000000.0 | 12227000000.0 | 6132000000.0 | 4458000000.0 |
| Gain Loss On Investment Securities | | | 16000000.0 | -147000000.0 | 70000000.0 | 71000000.0 | 18000000.0 |
| Income Tax Paid Supplemental Data | 491000000.0 | | 2436000000.0 | 4869000000.0 | 2751000000.0 | 732000000.0 | |
| Interest Paid Supplemental Data | 1174000000.0 | | 1252000000.0 | 1084000000.0 | 1225000000.0 | 1272000000.0 | 1257000000.0 |
| Investing Cash Flow | | | 14797000000.0 | 623000000.0 | -3095000000.0 | 1534000000.0 | 1435000000.0 |
| Issuance Of Capital Stock | | | 106000000.0 | 243000000.0 | 62000000.0 | 25000000.0 | 37000000.0 |
| Issuance Of Debt | | | 19564000000.0 | 3379000000.0 | 1589000000.0 | 1631000000.0 | 6003000000.0 |
| Long Term Debt Issuance | | | 12150000000.0 | 3379000000.0 | 1589000000.0 | 1631000000.0 | 6003000000.0 |
| Long Term Debt Payments | | | -17400000000.0 | -2280000000.0 | -1079000000.0 | -1984000000.0 | -2897000000.0 |
| Net Business Purchase And Sale | | | 0.0 | -818000000.0 | -726000000.0 | -1197000000.0 | -812000000.0 |
| Net Common Stock Issuance | | | -4548000000.0 | -11679000000.0 | -11510000000.0 | -9164000000.0 | -7991000000.0 |
| Net Income From Continuing Operations | | | 11001000000.0 | 16050000000.0 | 11172000000.0 | 5067000000.0 | 4101000000.0 |
| Net Investment Purchase And Sale | | | -5719000000.0 | 2947000000.0 | -1217000000.0 | 5033000000.0 | 4630000000.0 |
| Net Issuance Payments Of Debt | | | -6273000000.0 | 1099000000.0 | 510000000.0 | -353000000.0 | 3106000000.0 |
| Net Long Term Debt Issuance | | | -5250000000.0 | 1099000000.0 | 510000000.0 | -353000000.0 | 3106000000.0 |
| Net Other Financing Charges | | | -2114000000.0 | -1788000000.0 | -1946000000.0 | -1763000000.0 | -1843000000.0 |
| Net Other Investing Changes | | | 666000000.0 | 914000000.0 | 738000000.0 | 231000000.0 | 228000000.0 |
| Net PPEPurchase And Sale | | | -1464000000.0 | -2420000000.0 | -1890000000.0 | -2533000000.0 | -2611000000.0 |
| Net Short Term Debt Issuance | | 1024000000.0 | -1023000000.0 | 0.0 | 0.0 | | |
| Operating Cash Flow | | | 4360000000.0 | 16361000000.0 | 14117000000.0 | 8665000000.0 | 7069000000.0 |
| Operating Gains Losses | | | -962000000.0 | -1691000000.0 | -1080000000.0 | -946000000.0 | -1023000000.0 |
| Other Cash Adjustment Outside Changein Cash | | -140000000.0 | 0.0 | 0.0 | | | |
| Other Non Cash Items | | | -8522000000.0 | -644000000.0 | -490000000.0 | -283000000.0 | -142000000.0 |
| Pension And Employee Benefit Expense | | | -499000000.0 | 172000000.0 | -191000000.0 | 59000000.0 | 41000000.0 |
| Purchase Of Business | | | 0.0 | -818000000.0 | -726000000.0 | -1197000000.0 | -812000000.0 |
| Purchase Of Investment | | | -12708000000.0 | -6023000000.0 | -8622000000.0 | -2949000000.0 | -1295000000.0 |
| Purchase Of PPE | | | -1464000000.0 | -2420000000.0 | -1890000000.0 | -2533000000.0 | -2611000000.0 |
| Repayment Of Debt | | | -25837000000.0 | -2280000000.0 | -1079000000.0 | -1984000000.0 | -2897000000.0 |
| Repurchase Of Capital Stock | | | -4654000000.0 | -11922000000.0 | -11572000000.0 | -9189000000.0 | -8028000000.0 |
| Sale Of Investment | | | 6989000000.0 | 8970000000.0 | 7405000000.0 | 7982000000.0 | 5925000000.0 |
| Short Term Debt Issuance | | 2055000000.0 | 7414000000.0 | 0.0 | 0.0 | | |
| Short Term Debt Payments | | -1031000000.0 | -8437000000.0 | 0.0 | 0.0 | | |
