| | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-09-30 |
| Asset Impairment Charge | 21000000.0 | 34000000.0 | 33000000.0 | 5106000000.0 | 5102000000.0 | 5103000000.0 |
| Beginning Cash Position | 381000000.0 | 466000000.0 | 327000000.0 | 281000000.0 | 331000000.0 | 371000000.0 |
| Capital Expenditure | -1229000000.0 | -1310000000.0 | -1424000000.0 | -1222000000.0 | -1216000000.0 | -1221000000.0 |
| Capital Expenditure Reported | -1229000000.0 | -1310000000.0 | -1424000000.0 | -1222000000.0 | -1216000000.0 | -1221000000.0 |
| Cash Dividends Paid | -2373000000.0 | -2602000000.0 | -2723000000.0 | -2729000000.0 | -2514000000.0 | -2295000000.0 |
| Cash Flow From Continuing Financing Activities | -1310000000.0 | -1665000000.0 | -1654000000.0 | -1708000000.0 | -2013000000.0 | -2102000000.0 |
| Cash Flow From Continuing Investing Activities | -1332000000.0 | -1352000000.0 | -1519000000.0 | -1220000000.0 | -1210000000.0 | -1211000000.0 |
| Cash Flow From Continuing Operating Activities | 2789000000.0 | 2878000000.0 | 3126000000.0 | 2943000000.0 | 3024000000.0 | 2997000000.0 |
| Cash From Discontinued Operating Activities | -62000000.0 | 0.0 | 0.0 | | | |
| Change In Account Payable | 15000000.0 | -5000000.0 | -14000000.0 | -22000000.0 | -6000000.0 | 15000000.0 |
| Change In Accrued Expense | -17000000.0 | 0.0 | 36000000.0 | 25000000.0 | 10000000.0 | -4000000.0 |
| Change In Interest Payable | -17000000.0 | 0.0 | 36000000.0 | 25000000.0 | 10000000.0 | -4000000.0 |
| Change In Other Current Assets | -113000000.0 | -412000000.0 | -243000000.0 | -118000000.0 | -47000000.0 | -20000000.0 |
| Change In Other Current Liabilities | -118000000.0 | -281000000.0 | -265000000.0 | -91000000.0 | -12000000.0 | -2000000.0 |
| Change In Payable | 15000000.0 | -5000000.0 | -14000000.0 | -22000000.0 | | 15000000.0 |
| Change In Payables And Accrued Expense | -2000000.0 | -5000000.0 | 22000000.0 | 3000000.0 | 4000000.0 | 11000000.0 |
| Change In Receivables | -113000000.0 | -49000000.0 | 115000000.0 | 6000000.0 | 1000000.0 | -39000000.0 |
| Change In Working Capital | -346000000.0 | -747000000.0 | -371000000.0 | -200000000.0 | -54000000.0 | -50000000.0 |
| Changes In Cash | 85000000.0 | -139000000.0 | -47000000.0 | 15000000.0 | -57000000.0 | -116000000.0 |
| Common Stock Dividend Paid | -2373000000.0 | -2602000000.0 | -2723000000.0 | -2729000000.0 | -2514000000.0 | -2295000000.0 |
| Common Stock Payments | -70000000.0 | -65000000.0 | -30000000.0 | -33000000.0 | -26000000.0 | -24000000.0 |
| Deferred Income Tax | 4000000.0 | 3000000.0 | 8000000.0 | 4000000.0 | 0.0 | 0.0 |
| Deferred Tax | 4000000.0 | 3000000.0 | 8000000.0 | 4000000.0 | 0.0 | 0.0 |
| Depreciation | 1644000000.0 | 1707000000.0 | 1754000000.0 | 1738000000.0 | 1719000000.0 | 1706000000.0 |
| Depreciation Amortization Depletion | 1644000000.0 | 1707000000.0 | 1754000000.0 | 1738000000.0 | 1719000000.0 | 1706000000.0 |
| Depreciation And Amortization | 1644000000.0 | 1707000000.0 | 1754000000.0 | 1738000000.0 | 1719000000.0 | 1706000000.0 |
| Effect Of Exchange Rate Changes | 0.0 | 0.0 | 1000000.0 | -1000000.0 | 0.0 | 0.0 |
| End Cash Position | 466000000.0 | 327000000.0 | 281000000.0 | 295000000.0 | 274000000.0 | 255000000.0 |
| Financing Cash Flow | -1310000000.0 | -1665000000.0 | -1654000000.0 | -1708000000.0 | -2013000000.0 | -2102000000.0 |
| Free Cash Flow | 1498000000.0 | 1568000000.0 | 1702000000.0 | 1721000000.0 | 1833000000.0 | 1843000000.0 |
| Income Tax Paid Supplemental Data | 20000000.0 | 10000000.0 | 18000000.0 | 17000000.0 | | 21000000.0 |
| Interest Paid Supplemental Data | 661000000.0 | 684000000.0 | 800000000.0 | 895000000.0 | | 955000000.0 |
| Investing Cash Flow | -1332000000.0 | -1352000000.0 | -1519000000.0 | -1220000000.0 | -1093000000.0 | -1078000000.0 |
| Issuance Of Debt | 5230000000.0 | 4243000000.0 | 7456000000.0 | 1244000000.0 | 1644000000.0 | 193000000.0 |
| Long Term Debt Issuance | 5230000000.0 | 4243000000.0 | 7456000000.0 | 1244000000.0 | 1644000000.0 | 193000000.0 |
| Long Term Debt Payments | -4055000000.0 | -4203000000.0 | -5077000000.0 | -1519000000.0 | -1572000000.0 | -1317000000.0 |
| Net Business Purchase And Sale | -111000000.0 | -35000000.0 | -96000000.0 | -8000000.0 | -1000000.0 | 0.0 |
| Net Common Stock Issuance | -70000000.0 | -65000000.0 | -30000000.0 | -33000000.0 | -26000000.0 | -24000000.0 |
| Net Income From Continuing Operations | 1158000000.0 | 1675000000.0 | 1502000000.0 | -3903000000.0 | -4995000000.0 | -5243000000.0 |
| Net Issuance Payments Of Debt | 1175000000.0 | 1016000000.0 | 1138000000.0 | 1066000000.0 | 539000000.0 | 217000000.0 |
| Net Long Term Debt Issuance | 1175000000.0 | 40000000.0 | 2379000000.0 | -275000000.0 | 72000000.0 | -1124000000.0 |
| Net Other Financing Charges | -42000000.0 | -14000000.0 | -39000000.0 | -12000000.0 | | |
| Net Other Investing Changes | 8000000.0 | -7000000.0 | 1000000.0 | 10000000.0 | 7000000.0 | 10000000.0 |
| Net Short Term Debt Issuance | -20000000.0 | 976000000.0 | -1241000000.0 | 1341000000.0 | 467000000.0 | |
| Operating Cash Flow | 2727000000.0 | 2878000000.0 | 3126000000.0 | 2943000000.0 | 3049000000.0 | 3064000000.0 |
| Operating Gains Losses | 145000000.0 | 28000000.0 | | | | |
| Other Non Cash Items | 34000000.0 | 22000000.0 | 43000000.0 | 67000000.0 | 1135000000.0 | 1364000000.0 |
| Preferred Stock Dividend Paid | 0.0 | 0.0 | | | | |
| Provisionand Write Offof Assets | 4000000.0 | 3000000.0 | 8000000.0 | | | |
| Purchase Of Business | -111000000.0 | -35000000.0 | -96000000.0 | -8000000.0 | -1000000.0 | 0.0 |
| Repayment Of Debt | -4055000000.0 | -4203000000.0 | -5077000000.0 | -1519000000.0 | -1572000000.0 | -1317000000.0 |
| Repurchase Of Capital Stock | -70000000.0 | -65000000.0 | -30000000.0 | -33000000.0 | -26000000.0 | -24000000.0 |
| Short Term Debt Issuance | 1245000000.0 | | | | | |
| Short Term Debt Payments | -20000000.0 | | | | | |
| Stock Based Compensation | 129000000.0 | 156000000.0 | 157000000.0 | 131000000.0 | 117000000.0 | 117000000.0 |