| | 2019-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 |
| Asset Impairment Charge | | | 2000000.0 | 21000000.0 | 27000000.0 | 1000000.0 | 322000000.0 |
| Beginning Cash Position | | | 1877000000.0 | 1571000000.0 | 1573000000.0 | 1402000000.0 | 1372000000.0 |
| Cash Dividends Paid | | | -1011000000.0 | -1026000000.0 | -1024000000.0 | -986000000.0 | -976000000.0 |
| Cash Flow From Continuing Financing Activities | | | -14505000000.0 | -2748000000.0 | -8943000000.0 | -9127000000.0 | -6543000000.0 |
| Cash Flow From Continuing Investing Activities | | | 2913000000.0 | -2487000000.0 | 5843000000.0 | 6283000000.0 | 3190000000.0 |
| Cash Flow From Continuing Operating Activities | | | 4622000000.0 | 6953000000.0 | 3377000000.0 | 3159000000.0 | 3314000000.0 |
| Cash From Discontinued Financing Activities | | | 13903000000.0 | 3530000000.0 | 3880000000.0 | 0.0 | 0.0 |
| Cash From Discontinued Investing Activities | | | -6539000000.0 | -4534000000.0 | -4171000000.0 | 0.0 | 0.0 |
| Cash From Discontinued Operating Activities | | | -488000000.0 | -710000000.0 | -104000000.0 | 0.0 | 0.0 |
| Change In Other Working Capital | | | 144000000.0 | 2174000000.0 | 94000000.0 | -443000000.0 | -913000000.0 |
| Change In Working Capital | | | -5280000000.0 | -1364000000.0 | -2357000000.0 | -2957000000.0 | -3757000000.0 |
| Changes In Cash | | | -94000000.0 | 4000000.0 | -118000000.0 | 315000000.0 | -39000000.0 |
| Common Stock Dividend Paid | | | -982000000.0 | -997000000.0 | -1002000000.0 | -986000000.0 | -976000000.0 |
| Common Stock Payments | | | -5200000000.0 | -2961000000.0 | -6652000000.0 | -7334000000.0 | -5836000000.0 |
| Depreciation And Amortization | | | 3861000000.0 | 3841000000.0 | 3597000000.0 | 3595000000.0 | 3455000000.0 |
| Earnings Losses From Equity Investments | | | -67000000.0 | -15000000.0 | -54000000.0 | 5000000.0 | 0.0 |
| Effect Of Exchange Rate Changes | | | -117000000.0 | -13000000.0 | -83000000.0 | 14000000.0 | 12000000.0 |
| End Cash Position | | | 1571000000.0 | 1573000000.0 | 1372000000.0 | 1717000000.0 | 1345000000.0 |
| Financing Cash Flow | | | -602000000.0 | 782000000.0 | -5063000000.0 | -9127000000.0 | -6543000000.0 |
| Free Cash Flow | | | 4134000000.0 | 6243000000.0 | 3273000000.0 | 3159000000.0 | 3314000000.0 |
| Gain Loss On Investment Securities | | | 637000000.0 | 662000000.0 | 637000000.0 | 831000000.0 | 706000000.0 |
| Gain Loss On Sale Of Business | | | 153000000.0 | 29000000.0 | -616000000.0 | -567000000.0 | -81000000.0 |
| Income Tax Paid Supplemental Data | | | 746000000.0 | 984000000.0 | 708000000.0 | 157000000.0 | 330000000.0 |
| Interest Paid Supplemental Data | | | 1127000000.0 | 1059000000.0 | 858000000.0 | 588000000.0 | 389000000.0 |
| Investing Cash Flow | | | -3626000000.0 | -7021000000.0 | 1672000000.0 | 6283000000.0 | 3190000000.0 |
| Issuance Of Capital Stock | | 0.0 | | | | | |
| Issuance Of Debt | | | 97000000.0 | 742000000.0 | 661000000.0 | 1901000000.0 | 1241000000.0 |
| Long Term Debt Issuance | | | 97000000.0 | 742000000.0 | 661000000.0 | 1901000000.0 | 1241000000.0 |
| Long Term Debt Payments | | | -9760000000.0 | -2349000000.0 | -2048000000.0 | -2671000000.0 | -1101000000.0 |
| Net Business Purchase And Sale | | | 0.0 | 2568000000.0 | 587000000.0 | | 0.0 |
| Net Common Stock Issuance | | | -5200000000.0 | -2961000000.0 | -6652000000.0 | -7334000000.0 | -5836000000.0 |
| Net Income From Continuing Operations | | | 2890000000.0 | 2741000000.0 | 2700000000.0 | 3270000000.0 | 3097000000.0 |
| Net Investment Purchase And Sale | | | 2736000000.0 | -3545000000.0 | 4785000000.0 | 5157000000.0 | 2968000000.0 |
| Net Issuance Payments Of Debt | | | -9663000000.0 | -1607000000.0 | -1387000000.0 | -770000000.0 | 140000000.0 |
| Net Long Term Debt Issuance | | | -9663000000.0 | -1607000000.0 | -1387000000.0 | -770000000.0 | 140000000.0 |
| Net Other Financing Charges | | | 1369000000.0 | 2846000000.0 | 605000000.0 | -37000000.0 | 129000000.0 |
| Net Other Investing Changes | | | -1097000000.0 | -1754000000.0 | -66000000.0 | -429000000.0 | -821000000.0 |
| Net Preferred Stock Issuance | | | 0.0 | 0.0 | -485000000.0 | 0.0 | 0.0 |
| Operating Cash Flow | | | 4134000000.0 | 6243000000.0 | 3273000000.0 | 3159000000.0 | 3314000000.0 |
| Operating Gains Losses | | | 723000000.0 | 676000000.0 | -33000000.0 | 269000000.0 | 625000000.0 |
| Other Cash Adjustment Outside Changein Cash | | | -95000000.0 | 11000000.0 | 0.0 | 110000000.0 | 0.0 |
| Other Non Cash Items | | | 303000000.0 | -37000000.0 | 14000000.0 | 8000000.0 | -5000000.0 |
| Preferred Stock Dividend Paid | | | -29000000.0 | -29000000.0 | -22000000.0 | 0.0 | 0.0 |
| Preferred Stock Issuance | | 0.0 | | | | | |
| Preferred Stock Payments | | | 0.0 | 0.0 | -485000000.0 | 0.0 | 0.0 |
| Purchase Of Investment | | | -20884000000.0 | -29190000000.0 | -25352000000.0 | -31061000000.0 | -26465000000.0 |
| Repayment Of Debt | | | -9760000000.0 | -2349000000.0 | -2048000000.0 | -2671000000.0 | -1101000000.0 |
| Repurchase Of Capital Stock | | | -5200000000.0 | -2961000000.0 | -7137000000.0 | -7334000000.0 | -5836000000.0 |
| Sale Of Business | | | 0.0 | 2568000000.0 | 587000000.0 | | 0.0 |
| Sale Of Investment | | | 23620000000.0 | 25645000000.0 | 30137000000.0 | 36218000000.0 | 29433000000.0 |
| Unrealized Gain Loss On Investment Securities | 207000000.0 | | 2123000000.0 | 1075000000.0 | -571000000.0 | -1027000000.0 | -423000000.0 |