| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 |
| Amortization Of Securities | 140000000.0 | | | | |
| Asset Impairment Charge | 1932000000.0 | 1624000000.0 | 0.0 | | |
| Beginning Cash Position | | 1209000000.0 | 1147000000.0 | 794000000.0 | 96000000.0 |
| Capital Expenditure | | -1281000000.0 | -1621000000.0 | -2317000000.0 | -2629000000.0 |
| Capital Expenditure Reported | | -1281000000.0 | -1621000000.0 | -2317000000.0 | -2629000000.0 |
| Cash Dividends Paid | | -2525000000.0 | -2504000000.0 | -2529000000.0 | -2557000000.0 |
| Cash Flow From Continuing Financing Activities | | -3465000000.0 | -3145000000.0 | -3014000000.0 | -2887000000.0 |
| Cash Flow From Continuing Investing Activities | | -2305000000.0 | -2175000000.0 | -4175000000.0 | -2629000000.0 |
| Cash Flow From Continuing Operating Activities | | 5708000000.0 | 4967000000.0 | 6491000000.0 | 5635000000.0 |
| Change In Account Payable | | 387000000.0 | 161000000.0 | -201000000.0 | -5000000.0 |
| Change In Accrued Expense | | -17000000.0 | 50000000.0 | -13000000.0 | 43000000.0 |
| Change In Income Tax Payable | | 2000000.0 | -5000000.0 | 2000000.0 | 5000000.0 |
| Change In Interest Payable | | -17000000.0 | 50000000.0 | -13000000.0 | 43000000.0 |
| Change In Inventory | | -202000000.0 | -183000000.0 | 188000000.0 | -12000000.0 |
| Change In Other Current Assets | | -109000000.0 | -51000000.0 | 108000000.0 | -46000000.0 |
| Change In Other Current Liabilities | | 165000000.0 | 11000000.0 | -60000000.0 | -52000000.0 |
| Change In Other Working Capital | | -28000000.0 | -24000000.0 | 870000000.0 | -58000000.0 |
| Change In Payable | -112000000.0 | 387000000.0 | 156000000.0 | -199000000.0 | |
| Change In Payables And Accrued Expense | | 370000000.0 | 206000000.0 | -212000000.0 | 43000000.0 |
| Change In Receivables | | -265000000.0 | -220000000.0 | 301000000.0 | 52000000.0 |
| Change In Tax Payable | | 2000000.0 | -5000000.0 | 2000000.0 | 5000000.0 |
| Change In Working Capital | | -69000000.0 | -261000000.0 | 1195000000.0 | -73000000.0 |
| Changes In Account Receivables | | -265000000.0 | -220000000.0 | 301000000.0 | 52000000.0 |
| Changes In Cash | | -62000000.0 | -353000000.0 | -698000000.0 | 119000000.0 |
| Common Stock Dividend Paid | | -2525000000.0 | -2504000000.0 | -2529000000.0 | -2557000000.0 |
| Common Stock Payments | | 0.0 | -368000000.0 | -522000000.0 | -7000000.0 |
| Deferred Income Tax | | 355000000.0 | 692000000.0 | 710000000.0 | 647000000.0 |
| Deferred Tax | | 355000000.0 | 692000000.0 | 710000000.0 | 647000000.0 |
| Depreciation Amortization Depletion | | 2135000000.0 | 2186000000.0 | 2250000000.0 | 2354000000.0 |
| Dividend Received CFO | | 720000000.0 | 725000000.0 | 755000000.0 | 823000000.0 |
| Dividends Received CFI | | 163000000.0 | 156000000.0 | 228000000.0 | 177000000.0 |
| Earnings Losses From Equity Investments | | -591000000.0 | -803000000.0 | -838000000.0 | -890000000.0 |
| Effect Of Exchange Rate Changes | | 0.0 | 0.0 | 0.0 | -1000000.0 |
| End Cash Position | | 1147000000.0 | 794000000.0 | 96000000.0 | 214000000.0 |
| Financing Cash Flow | | -3465000000.0 | -3145000000.0 | -3014000000.0 | -2887000000.0 |
| Free Cash Flow | | 4427000000.0 | 3346000000.0 | 4174000000.0 | 3006000000.0 |
| Gain Loss On Investment Securities | | 20000000.0 | 56000000.0 | -126000000.0 | 72000000.0 |
| Gain Loss On Sale Of Business | | 1418000000.0 | -32000000.0 | -15000000.0 | -74000000.0 |
| Gain Loss On Sale Of PPE | | | -32000000.0 | | |
| Income Tax Paid Supplemental Data | | 10000000.0 | 13000000.0 | 11000000.0 | 33000000.0 |
| Interest Paid Supplemental Data | | 1529000000.0 | 1460000000.0 | 1844000000.0 | 1816000000.0 |
| Investing Cash Flow | | -2305000000.0 | -2175000000.0 | -4175000000.0 | -2629000000.0 |
| Issuance Of Debt | | 5959000000.0 | 9058000000.0 | 7590000000.0 | 10441000000.0 |
| Long Term Debt Issuance | | 5959000000.0 | 9058000000.0 | 7590000000.0 | 10441000000.0 |
| Long Term Debt Payments | | -6831000000.0 | -9735000000.0 | -7356000000.0 | -10557000000.0 |
| Net Business Purchase And Sale | | -1547000000.0 | -487000000.0 | -1842000000.0 | -62000000.0 |
| Net Common Stock Issuance | | 0.0 | -368000000.0 | -522000000.0 | -7000000.0 |
| Net Income From Continuing Operations | | 1850000000.0 | 2625000000.0 | 2486000000.0 | 2720000000.0 |
| Net Investment Purchase And Sale | | -38000000.0 | -229000000.0 | -212000000.0 | -121000000.0 |
| Net Issuance Payments Of Debt | | -872000000.0 | -677000000.0 | 234000000.0 | -116000000.0 |
| Net Long Term Debt Issuance | | -872000000.0 | -677000000.0 | 234000000.0 | -116000000.0 |
| Net Other Financing Charges | | -68000000.0 | 404000000.0 | -197000000.0 | -207000000.0 |
| Net Other Investing Changes | | -8000000.0 | 6000000.0 | -32000000.0 | 6000000.0 |
| Net PPEPurchase And Sale | 1069000000.0 | 406000000.0 | 6000000.0 | -28000000.0 | |
| Operating Cash Flow | | 5708000000.0 | 4967000000.0 | 6491000000.0 | 5635000000.0 |
| Operating Gains Losses | | 847000000.0 | -779000000.0 | -979000000.0 | -892000000.0 |
| Other Non Cash Items | | -130000000.0 | -221000000.0 | 74000000.0 | 56000000.0 |
| Pension And Employee Benefit Expense | -90000000.0 | -39000000.0 | -50000000.0 | | |
| Preferred Stock Dividend Paid | 0.0 | | | | |
| Purchase Of Business | | -1547000000.0 | -487000000.0 | -1842000000.0 | -62000000.0 |
| Purchase Of Investment | | -38000000.0 | -229000000.0 | -212000000.0 | -121000000.0 |
| Purchase Of PPE | | | | -28000000.0 | |
| Repayment Of Debt | | -6831000000.0 | -9735000000.0 | -7356000000.0 | -10557000000.0 |
| Repurchase Of Capital Stock | | 0.0 | -368000000.0 | -522000000.0 | -7000000.0 |
| Sale Of Business | 0.0 | 0.0 | | | |
| Sale Of PPE | 1069000000.0 | 406000000.0 | 6000000.0 | | |
