| | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 |
| Asset Impairment Charge | 443000000.0 | 0.0 | 0.0 | | | |
| Beginning Cash Position | | 1146000000.0 | 1530000000.0 | 1195000000.0 | 1507000000.0 | 1333000000.0 |
| Capital Expenditure | | -4168000000.0 | -4494000000.0 | -4771000000.0 | -4796000000.0 | -4764000000.0 |
| Capital Expenditure Reported | | -4168000000.0 | -4494000000.0 | -4771000000.0 | -4796000000.0 | -4764000000.0 |
| Cash Dividends Paid | | -1089000000.0 | -1096000000.0 | -1100000000.0 | -1127000000.0 | -1166000000.0 |
| Cash Flow From Continuing Financing Activities | | 1014000000.0 | -1488000000.0 | 1797000000.0 | 788000000.0 | 746000000.0 |
| Cash Flow From Continuing Investing Activities | | -4565000000.0 | -1003000000.0 | -5273000000.0 | -5306000000.0 | -5249000000.0 |
| Cash Flow From Continuing Operating Activities | | 3935000000.0 | 2156000000.0 | 3614000000.0 | 4518000000.0 | 4800000000.0 |
| Change In Account Payable | | 558000000.0 | -285000000.0 | -1000000.0 | 200000000.0 | 161000000.0 |
| Change In Accrued Expense | | 42000000.0 | -7000000.0 | 28000000.0 | 21000000.0 | 24000000.0 |
| Change In Income Tax Payable | | 7000000.0 | -13000000.0 | -5000000.0 | -4000000.0 | 33000000.0 |
| Change In Interest Payable | | 42000000.0 | -7000000.0 | 28000000.0 | 21000000.0 | 24000000.0 |
| Change In Inventory | -82000000.0 | -111000000.0 | 38000000.0 | -16000000.0 | | |
| Change In Other Current Liabilities | | 1000000.0 | 213000000.0 | -101000000.0 | 103000000.0 | 163000000.0 |
| Change In Other Working Capital | | -233000000.0 | -1183000000.0 | -606000000.0 | -719000000.0 | -855000000.0 |
| Change In Payable | | 565000000.0 | -298000000.0 | -6000000.0 | 196000000.0 | 194000000.0 |
| Change In Payables And Accrued Expense | | 607000000.0 | -305000000.0 | 22000000.0 | 217000000.0 | 218000000.0 |
| Change In Prepaid Assets | | 26000000.0 | -200000000.0 | 25000000.0 | 64000000.0 | 64000000.0 |
| Change In Receivables | | -399000000.0 | -180000000.0 | -261000000.0 | 27000000.0 | 86000000.0 |
| Change In Tax Payable | | 7000000.0 | -13000000.0 | -5000000.0 | -4000000.0 | 33000000.0 |
| Change In Working Capital | | -109000000.0 | -1655000000.0 | -921000000.0 | -324000000.0 | -324000000.0 |
| Changes In Account Receivables | | -296000000.0 | -275000000.0 | -263000000.0 | -150000000.0 | -30000000.0 |
| Changes In Cash | | 384000000.0 | -335000000.0 | 138000000.0 | 0.0 | 297000000.0 |
| Common Stock Dividend Paid | | -1089000000.0 | -1096000000.0 | -1100000000.0 | -1127000000.0 | -1166000000.0 |
| Common Stock Issuance | | 0.0 | 0.0 | 0.0 | | 1308000000.0 |
| Common Stock Payments | | 0.0 | -1000000000.0 | 0.0 | | 0.0 |
| Deferred Income Tax | | 435000000.0 | 132000000.0 | 416000000.0 | 556000000.0 | 590000000.0 |
| Deferred Tax | | 435000000.0 | 132000000.0 | 416000000.0 | 556000000.0 | 590000000.0 |
| Depreciation Amortization Depletion | | 2056000000.0 | 2031000000.0 | 2155000000.0 | 2244000000.0 | 2321000000.0 |
| Depreciation And Amortization | | 2056000000.0 | 2031000000.0 | 2155000000.0 | 2244000000.0 | 2321000000.0 |
| Dividend Received CFO | | 20000000.0 | 31000000.0 | 35000000.0 | 66000000.0 | 70000000.0 |
| End Cash Position | | 1530000000.0 | 1195000000.0 | 1333000000.0 | 1507000000.0 | 1630000000.0 |
| Financing Cash Flow | | 1014000000.0 | -1488000000.0 | 1797000000.0 | 788000000.0 | 746000000.0 |
| Free Cash Flow | | -233000000.0 | -2338000000.0 | -1157000000.0 | -278000000.0 | 36000000.0 |
| Gain Loss On Investment Securities | -53000000.0 | -181000000.0 | 12000000.0 | | | |
| Gain Loss On Sale Of Business | | 0.0 | -865000000.0 | 62000000.0 | 32000000.0 | 0.0 |
| Income Tax Paid Supplemental Data | 9000000.0 | 47000000.0 | 397000000.0 | 7000000.0 | | |
| Interest Paid Supplemental Data | | 900000000.0 | 987000000.0 | 1072000000.0 | 1112000000.0 | 1147000000.0 |
| Investing Cash Flow | | -4565000000.0 | -1003000000.0 | -5273000000.0 | -5306000000.0 | -5249000000.0 |
| Issuance Of Capital Stock | | 0.0 | 0.0 | 0.0 | | 1308000000.0 |
| Issuance Of Debt | | 1350000000.0 | 2250000000.0 | 3475000000.0 | 2275000000.0 | 1650000000.0 |
| Long Term Debt Issuance | | 1350000000.0 | 2250000000.0 | 3475000000.0 | 2275000000.0 | 1350000000.0 |
| Long Term Debt Payments | | -406000000.0 | -1460000000.0 | -477000000.0 | | -200000000.0 |
| Net Business Purchase And Sale | | 0.0 | 3927000000.0 | 0.0 | 45000000.0 | 45000000.0 |
| Net Common Stock Issuance | | 0.0 | -1000000000.0 | 0.0 | 1308000000.0 | 1308000000.0 |
| Net Income From Continuing Operations | | 1600000000.0 | 2516000000.0 | 1820000000.0 | 1936000000.0 | 2023000000.0 |
| Net Issuance Payments Of Debt | | 2096000000.0 | 588000000.0 | 2880000000.0 | 566000000.0 | 555000000.0 |
| Net Long Term Debt Issuance | | 944000000.0 | 790000000.0 | 2998000000.0 | 1798000000.0 | 1150000000.0 |
| Net Other Financing Charges | | -50000000.0 | -36000000.0 | -43000000.0 | -21000000.0 | -15000000.0 |
| Net Other Investing Changes | | -397000000.0 | -436000000.0 | -502000000.0 | -555000000.0 | -530000000.0 |
| Net Short Term Debt Issuance | | 1152000000.0 | -202000000.0 | -118000000.0 | -1232000000.0 | -595000000.0 |
| Operating Cash Flow | | 3935000000.0 | 2156000000.0 | 3614000000.0 | 4518000000.0 | 4800000000.0 |
| Operating Gains Losses | -53000000.0 | -181000000.0 | -853000000.0 | 62000000.0 | | |
| Other Non Cash Items | | 114000000.0 | -46000000.0 | 47000000.0 | 8000000.0 | 120000000.0 |
| Proceeds From Stock Option Exercised | | 57000000.0 | 56000000.0 | 60000000.0 | 62000000.0 | 64000000.0 |
| Purchase Of Business | -30000000.0 | -64000000.0 | | | | |
| Repayment Of Debt | | -406000000.0 | -1662000000.0 | -595000000.0 | | -1095000000.0 |
| Repurchase Of Capital Stock | | 0.0 | -1000000000.0 | 0.0 | | 0.0 |
| Sale Of Business | | 0.0 | 3927000000.0 | 0.0 | 45000000.0 | 45000000.0 |
| Short Term Debt Issuance | | | 0.0 | 0.0 | | 300000000.0 |
| Short Term Debt Payments | | | -202000000.0 | -118000000.0 | | -895000000.0 |