| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-09-30 |
| Asset Impairment Charge | | 0.0 | 680000000.0 | 0.0 | 0.0 | | |
| Beginning Cash Position | | 9419000000.0 | 9883000000.0 | 11529000000.0 | 8342000000.0 | 7337000000.0 | 7843000000.0 |
| Capital Expenditure | | -1215000000.0 | -1346000000.0 | -1220000000.0 | -1469000000.0 | -1467000000.0 | -1530000000.0 |
| Capital Expenditure Reported | -1222000000.0 | | | | | | |
| Cash Dividends Paid | | -1323000000.0 | -1376000000.0 | -1487000000.0 | -1542000000.0 | -1591000000.0 | -1643000000.0 |
| Cash Flow From Continuing Financing Activities | | -21962000000.0 | -33654000000.0 | -3519000000.0 | 6338000000.0 | 39723000000.0 | 18583000000.0 |
| Cash Flow From Continuing Investing Activities | | 19672000000.0 | 19874000000.0 | -5810000000.0 | -9479000000.0 | -42715000000.0 | -21889000000.0 |
| Cash Flow From Continuing Operating Activities | | 2838000000.0 | 15068000000.0 | 5912000000.0 | 687000000.0 | 3847000000.0 | 3095000000.0 |
| Change In Accrued Expense | 202000000.0 | | | | | | |
| Change In Other Working Capital | | -2803000000.0 | 9396000000.0 | 925000000.0 | -5451000000.0 | -2917000000.0 | -3884000000.0 |
| Change In Payables And Accrued Expense | 202000000.0 | | | | | | |
| Change In Working Capital | | -2803000000.0 | 9396000000.0 | 925000000.0 | -5451000000.0 | -2917000000.0 | -3884000000.0 |
| Changes In Cash | | 548000000.0 | 1288000000.0 | -3417000000.0 | -2454000000.0 | 855000000.0 | -211000000.0 |
| Common Stock Dividend Paid | | -1126000000.0 | -1165000000.0 | -1262000000.0 | -1348000000.0 | -1391000000.0 | -1419000000.0 |
| Common Stock Issuance | | 13000000.0 | 14000000.0 | 16000000.0 | 17000000.0 | 18000000.0 | 18000000.0 |
| Common Stock Payments | | -4567000000.0 | -124000000.0 | -2604000000.0 | -3064000000.0 | -3116000000.0 | -3240000000.0 |
| Deferred Income Tax | | 257000000.0 | 183000000.0 | -383000000.0 | -345000000.0 | -110000000.0 | -117000000.0 |
| Deferred Tax | | 257000000.0 | 183000000.0 | -383000000.0 | -345000000.0 | -110000000.0 | -117000000.0 |
| Depreciation Amortization Depletion | | 1867000000.0 | 1778000000.0 | 1887000000.0 | 1803000000.0 | 1751000000.0 | 1728000000.0 |
| Depreciation And Amortization | | 1867000000.0 | 1778000000.0 | 1887000000.0 | 1803000000.0 | 1751000000.0 | 1728000000.0 |
| Effect Of Exchange Rate Changes | | -84000000.0 | 358000000.0 | 230000000.0 | -311000000.0 | 122000000.0 | 12000000.0 |
| End Cash Position | | 9883000000.0 | 11529000000.0 | 8342000000.0 | 5577000000.0 | 8192000000.0 | 7632000000.0 |
| Financing Cash Flow | | -21962000000.0 | -33654000000.0 | -3519000000.0 | 6338000000.0 | 39723000000.0 | 18583000000.0 |
| Free Cash Flow | | 1623000000.0 | 13722000000.0 | 4692000000.0 | -782000000.0 | 2380000000.0 | 1565000000.0 |
| Gain Loss On Investment Securities | | -5000000.0 | 443000000.0 | 68000000.0 | 85000000.0 | 102000000.0 | 115000000.0 |
| Income Tax Paid Supplemental Data | | 473000000.0 | 449000000.0 | 882000000.0 | 1276000000.0 | 1338000000.0 | 1254000000.0 |
| Interest Paid Supplemental Data | | 233000000.0 | 3307000000.0 | 16021000000.0 | 21374000000.0 | 21273000000.0 | 20966000000.0 |
| Investing Cash Flow | | 19672000000.0 | 19874000000.0 | -5810000000.0 | -9479000000.0 | -42715000000.0 | -21889000000.0 |
| Issuance Of Capital Stock | | 1300000000.0 | 14000000.0 | 16000000.0 | 17000000.0 | 1006000000.0 | 1501000000.0 |
| Issuance Of Debt | | 5186000000.0 | 9929000000.0 | 6487000000.0 | 5737000000.0 | 8980000000.0 | 6486000000.0 |
| Long Term Debt Issuance | | 5186000000.0 | 9929000000.0 | 6487000000.0 | 5737000000.0 | 8980000000.0 | 6486000000.0 |
| Long Term Debt Payments | | -4650000000.0 | -4000000000.0 | -6059000000.0 | -5963000000.0 | -7209000000.0 | -7559000000.0 |
| Net Business Purchase And Sale | 0.0 | -162000000.0 | 446000000.0 | 0.0 | | | |
| Net Common Stock Issuance | | -4554000000.0 | -110000000.0 | -2588000000.0 | -3047000000.0 | -3098000000.0 | -3222000000.0 |
| Net Income From Continuing Operations | | 3759000000.0 | 2556000000.0 | 3302000000.0 | 4530000000.0 | 4980000000.0 | 5243000000.0 |
| Net Investment Purchase And Sale | | -6237000000.0 | 5723000000.0 | 17553000000.0 | -9347000000.0 | -5225000000.0 | -3507000000.0 |
| Net Issuance Payments Of Debt | | 933000000.0 | 5585000000.0 | 501000000.0 | -167000000.0 | 3815000000.0 | 859000000.0 |
| Net Long Term Debt Issuance | | 536000000.0 | 5929000000.0 | 428000000.0 | -226000000.0 | 1771000000.0 | -1073000000.0 |
| Net Other Financing Charges | | 123000000.0 | -1543000000.0 | -5049000000.0 | 1680000000.0 | 3721000000.0 | 3901000000.0 |
| Net Other Investing Changes | | 1070000000.0 | -572000000.0 | 42000000.0 | -1458000000.0 | -2284000000.0 | -1688000000.0 |
| Net PPEPurchase And Sale | | -1181000000.0 | -1346000000.0 | -1220000000.0 | -1469000000.0 | -1467000000.0 | -1530000000.0 |
| Net Preferred Stock Issuance | | 287000000.0 | 0.0 | -500000000.0 | 0.0 | 988000000.0 | 483000000.0 |
| Net Short Term Debt Issuance | | 397000000.0 | -344000000.0 | 73000000.0 | 59000000.0 | 2044000000.0 | 1932000000.0 |
| Operating Cash Flow | | 2838000000.0 | 15068000000.0 | 5912000000.0 | 687000000.0 | 3847000000.0 | 3095000000.0 |
| Operating Gains Losses | | -11000000.0 | 436000000.0 | 62000000.0 | 80000000.0 | 99000000.0 | 111000000.0 |
| Pension And Employee Benefit Expense | | -6000000.0 | -7000000.0 | -6000000.0 | -5000000.0 | -3000000.0 | -4000000.0 |
| Preferred Stock Dividend Paid | | -197000000.0 | -211000000.0 | -225000000.0 | -194000000.0 | -200000000.0 | -224000000.0 |
| Preferred Stock Issuance | 1567000000.0 | 1287000000.0 | 0.0 | 0.0 | | | |
| Preferred Stock Payments | | -1000000000.0 | 0.0 | -500000000.0 | 0.0 | | -1000000000.0 |
| Proceeds From Stock Option Exercised | | 50000000.0 | 9000000.0 | 0.0 | 0.0 | | |
| Purchase Of Business | 0.0 | -170000000.0 | 0.0 | 0.0 | | | |
| Purchase Of Investment | | -63160000000.0 | -34833000000.0 | -23763000000.0 | -48146000000.0 | -42839000000.0 | -42898000000.0 |
| Purchase Of PPE | | -1215000000.0 | -1346000000.0 | -1220000000.0 | -1469000000.0 | -1467000000.0 | -1530000000.0 |
| Repayment Of Debt | | -4650000000.0 | -4000000000.0 | -6059000000.0 | -5963000000.0 | -7209000000.0 | -7559000000.0 |
| Repurchase Of Capital Stock | | -5567000000.0 | -124000000.0 | -3104000000.0 | -3064000000.0 | -3116000000.0 | -4240000000.0 |
| Sale Of Business | 0.0 | 8000000.0 | 446000000.0 | 0.0 | | | |
| Sale Of Investment | | 56923000000.0 | 40556000000.0 | 41316000000.0 | 38799000000.0 | 37614000000.0 | 39391000000.0 |
| Sale Of PPE | 0.0 | 34000000.0 | 45000000.0 | 0.0 | | | |