| | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 |
| Beginning Cash Position | | 863000000.0 | 511000000.0 | 99000000.0 | 145000000.0 | 154000000.0 |
| Capital Expenditure | | -2888000000.0 | -3325000000.0 | -3380000000.0 | -3161000000.0 | -3272000000.0 |
| Cash Dividends Paid | | -1079000000.0 | -1137000000.0 | -1196000000.0 | -1227000000.0 | -1258000000.0 |
| Cash Flow From Continuing Financing Activities | | -754000000.0 | -1260000000.0 | 1228000000.0 | 635000000.0 | 12000000.0 |
| Cash Flow From Continuing Investing Activities | | -1101000000.0 | -2958000000.0 | -3306000000.0 | -3082000000.0 | -3308000000.0 |
| Cash Flow From Continuing Operating Activities | | 1503000000.0 | 3806000000.0 | 2133000000.0 | 2517000000.0 | 3298000000.0 |
| Change In Account Payable | | | 13000000.0 | 34000000.0 | | 82000000.0 |
| Change In Income Tax Payable | | -94000000.0 | -10000000.0 | 2000000.0 | | 85000000.0 |
| Change In Inventory | | | -211000000.0 | -123000000.0 | | 29000000.0 |
| Change In Other Current Liabilities | | 111000000.0 | -201000000.0 | 4000000.0 | 6000000.0 | 13000000.0 |
| Change In Other Working Capital | | -865000000.0 | 1443000000.0 | -226000000.0 | -57000000.0 | 107000000.0 |
| Change In Payable | | -94000000.0 | -10000000.0 | 2000000.0 | | 85000000.0 |
| Change In Payables And Accrued Expense | | -94000000.0 | -10000000.0 | 2000000.0 | | 85000000.0 |
| Change In Prepaid Assets | | | -50000000.0 | 29000000.0 | | 11000000.0 |
| Change In Receivables | | 1000000.0 | 75000000.0 | -384000000.0 | | -12000000.0 |
| Change In Tax Payable | | -94000000.0 | -10000000.0 | 2000000.0 | | 85000000.0 |
| Change In Working Capital | | -847000000.0 | 1307000000.0 | -604000000.0 | -476000000.0 | 193000000.0 |
| Changes In Cash | | -352000000.0 | -412000000.0 | 55000000.0 | 70000000.0 | 2000000.0 |
| Common Stock Dividend Paid | | -1079000000.0 | -1137000000.0 | -1196000000.0 | -1227000000.0 | -1258000000.0 |
| Common Stock Payments | 0.0 | -500000000.0 | 0.0 | 0.0 | | |
| Deferred Income Tax | | -261000000.0 | 355000000.0 | 263000000.0 | 216000000.0 | 100000000.0 |
| Deferred Tax | | -261000000.0 | 355000000.0 | 263000000.0 | 216000000.0 | 100000000.0 |
| Depreciation | | 1283000000.0 | 1324000000.0 | 1373000000.0 | 1429000000.0 | 1459000000.0 |
| Depreciation Amortization Depletion | | 1283000000.0 | 1324000000.0 | 1373000000.0 | 1429000000.0 | 1459000000.0 |
| Depreciation And Amortization | | 1283000000.0 | 1324000000.0 | 1373000000.0 | 1429000000.0 | 1459000000.0 |
| End Cash Position | | 511000000.0 | 99000000.0 | 154000000.0 | 215000000.0 | 156000000.0 |
| Financing Cash Flow | | -754000000.0 | -1260000000.0 | 1228000000.0 | 635000000.0 | 12000000.0 |
| Free Cash Flow | | -1385000000.0 | 481000000.0 | -1247000000.0 | -644000000.0 | 26000000.0 |
| Gain Loss On Investment Securities | | 841000000.0 | -1581000000.0 | 16000000.0 | -104000000.0 | -215000000.0 |
| Income Tax Paid Supplemental Data | | 353000000.0 | 144000000.0 | 68000000.0 | | 0.0 |
| Interest Paid Supplemental Data | | 602000000.0 | 683000000.0 | 799000000.0 | 866000000.0 | 932000000.0 |
| Investing Cash Flow | | -1101000000.0 | -2958000000.0 | -3306000000.0 | -3082000000.0 | -3308000000.0 |
| Issuance Of Debt | | 4850000000.0 | 3800000000.0 | 4494000000.0 | 4964000000.0 | 3700000000.0 |
| Long Term Debt Issuance | | 2850000000.0 | 2800000000.0 | 3350000000.0 | 4250000000.0 | 3600000000.0 |
| Long Term Debt Payments | | -700000000.0 | -1575000000.0 | -1500000000.0 | -2100000000.0 | -2150000000.0 |
| Net Business Purchase And Sale | | -124000000.0 | 291000000.0 | 0.0 | | 0.0 |
| Net Common Stock Issuance | 0.0 | -500000000.0 | 0.0 | 0.0 | | |
| Net Income From Continuing Operations | | 1031000000.0 | 2563000000.0 | 1772000000.0 | 1980000000.0 | 2111000000.0 |
| Net Intangibles Purchase And Sale | -98000000.0 | | | | | |
| Net Investment Purchase And Sale | 8000000.0 | | | | | |
| Net Issuance Payments Of Debt | | 831000000.0 | -25000000.0 | 2494000000.0 | 1921000000.0 | 1386000000.0 |
| Net Long Term Debt Issuance | | 2150000000.0 | 1225000000.0 | 1850000000.0 | 2150000000.0 | 1450000000.0 |
| Net Other Financing Charges | | -6000000.0 | -98000000.0 | -70000000.0 | -59000000.0 | -116000000.0 |
| Net Other Investing Changes | | -7000000.0 | 39000000.0 | 74000000.0 | 79000000.0 | -36000000.0 |
| Net PPEPurchase And Sale | | -970000000.0 | -3288000000.0 | -3380000000.0 | -3161000000.0 | -3272000000.0 |
| Net Short Term Debt Issuance | | -1319000000.0 | -1250000000.0 | 644000000.0 | -229000000.0 | -64000000.0 |
| Operating Cash Flow | | 1503000000.0 | 3806000000.0 | 2133000000.0 | 2517000000.0 | 3298000000.0 |
| Operating Gains Losses | | 725000000.0 | -1215000000.0 | 91000000.0 | | -139000000.0 |
| Other Non Cash Items | | -483000000.0 | -528000000.0 | -762000000.0 | -610000000.0 | -426000000.0 |
| Pension And Employee Benefit Expense | | -239000000.0 | 366000000.0 | 75000000.0 | 76000000.0 | 76000000.0 |
| Provisionand Write Offof Assets | 138000000.0 | 55000000.0 | 3000000.0 | 0.0 | | |
| Purchase Of Business | -111000000.0 | -124000000.0 | 0.0 | 0.0 | | |
| Purchase Of Intangibles | -98000000.0 | | | | | |
| Purchase Of Investment | -2092000000.0 | | | | | |
| Purchase Of PPE | | -2888000000.0 | -3325000000.0 | -3380000000.0 | -3161000000.0 | -3272000000.0 |
| Repayment Of Debt | | -4019000000.0 | -3825000000.0 | -2000000000.0 | -3043000000.0 | -2314000000.0 |
| Repurchase Of Capital Stock | 0.0 | -500000000.0 | 0.0 | 0.0 | | |
| Sale Of Business | | 0.0 | 291000000.0 | 0.0 | | 0.0 |
| Sale Of Investment | 2100000000.0 | | | | | |
| Sale Of PPE | | 1918000000.0 | 37000000.0 | 0.0 | | 0.0 |
| Short Term Debt Issuance | | 2000000000.0 | 1000000000.0 | 1144000000.0 | | 100000000.0 |
| Short Term Debt Payments | | -3319000000.0 | -2250000000.0 | -500000000.0 | -943000000.0 | -164000000.0 |