| | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 |
| Amortization Cash Flow | | 275000000.0 | 309000000.0 | 262000000.0 | | 274000000.0 |
| Amortization Of Intangibles | | 275000000.0 | 309000000.0 | 262000000.0 | | 274000000.0 |
| Asset Impairment Charge | 0.0 | 0.0 | | | | |
| Beginning Cash Position | | 254000000.0 | 91000000.0 | 109000000.0 | 82000000.0 | 30000000.0 |
| Capital Expenditure | | -4419000000.0 | -4401000000.0 | -4513000000.0 | -5023000000.0 | -4870000000.0 |
| Capital Expenditure Reported | | -4419000000.0 | -4401000000.0 | -4513000000.0 | -5023000000.0 | -4870000000.0 |
| Cash Dividends Paid | | -489000000.0 | -535000000.0 | -522000000.0 | -555000000.0 | -574000000.0 |
| Cash Flow From Continuing Financing Activities | | -345000000.0 | 374000000.0 | 2271000000.0 | 2252000000.0 | 1549000000.0 |
| Cash Flow From Continuing Investing Activities | | -1628000000.0 | -4233000000.0 | -4489000000.0 | -4230000000.0 | -4016000000.0 |
| Cash Flow From Continuing Operating Activities | | 1810000000.0 | 3877000000.0 | 2139000000.0 | 1995000000.0 | 2486000000.0 |
| Change In Account Payable | | 203000000.0 | -302000000.0 | 210000000.0 | -37000000.0 | -15000000.0 |
| Change In Inventory | | -259000000.0 | 167000000.0 | 42000000.0 | 14000000.0 | -17000000.0 |
| Change In Other Current Assets | | | 1121000000.0 | -760000000.0 | | 15000000.0 |
| Change In Other Current Liabilities | | | 82000000.0 | 74000000.0 | | 221000000.0 |
| Change In Other Working Capital | -2292000000.0 | 338000000.0 | 1277000000.0 | -659000000.0 | -431000000.0 | |
| Change In Payable | | 203000000.0 | -302000000.0 | 210000000.0 | -37000000.0 | -15000000.0 |
| Change In Payables And Accrued Expense | | 203000000.0 | -302000000.0 | 210000000.0 | -37000000.0 | -15000000.0 |
| Change In Receivables | | -480000000.0 | 423000000.0 | -84000000.0 | 77000000.0 | -253000000.0 |
| Change In Working Capital | | -198000000.0 | 1491000000.0 | -518000000.0 | -377000000.0 | -49000000.0 |
| Changes In Account Receivables | | -461000000.0 | 423000000.0 | -84000000.0 | -58000000.0 | -253000000.0 |
| Changes In Cash | | -163000000.0 | 18000000.0 | -79000000.0 | 17000000.0 | 19000000.0 |
| Common Stock Dividend Paid | | -440000000.0 | -485000000.0 | -522000000.0 | -555000000.0 | -574000000.0 |
| Common Stock Issuance | | 0.0 | 0.0 | 494000000.0 | 247000000.0 | 0.0 |
| Deferred Income Tax | | 20000000.0 | 31000000.0 | 221000000.0 | 95000000.0 | 122000000.0 |
| Deferred Tax | | 20000000.0 | 31000000.0 | 221000000.0 | 95000000.0 | 122000000.0 |
| Depreciation | | 1013000000.0 | 1092000000.0 | 1177000000.0 | | 1256000000.0 |
| Depreciation Amortization Depletion | | 1288000000.0 | 1401000000.0 | 1439000000.0 | 1423000000.0 | 1530000000.0 |
| Depreciation And Amortization | | 1288000000.0 | 1401000000.0 | 1439000000.0 | 1423000000.0 | 1530000000.0 |
| Dividend Received CFO | 155000000.0 | 0.0 | 0.0 | | | |
| Dividends Received CFI | 0.0 | 0.0 | | | | |
| Earnings Losses From Equity Investments | -339000000.0 | 0.0 | 0.0 | | | |
| End Cash Position | | 91000000.0 | 109000000.0 | 30000000.0 | 99000000.0 | 49000000.0 |
| Financing Cash Flow | | -345000000.0 | 374000000.0 | 2271000000.0 | 2252000000.0 | 1549000000.0 |
| Free Cash Flow | | -2609000000.0 | -524000000.0 | -2374000000.0 | -3028000000.0 | -2384000000.0 |
| Gain Loss On Investment Securities | | -98000000.0 | -4000000.0 | -6000000.0 | -4000000.0 | -4000000.0 |
| Gain Loss On Sale Of Business | | -303000000.0 | 13000000.0 | 0.0 | | 49000000.0 |
| Income Tax Paid Supplemental Data | | 421000000.0 | 215000000.0 | | | |
| Interest Paid Supplemental Data | | 480000000.0 | 664000000.0 | 805000000.0 | 888000000.0 | 983000000.0 |
| Investing Cash Flow | | -1628000000.0 | -4233000000.0 | -4489000000.0 | -4230000000.0 | -4016000000.0 |
| Issuance Of Capital Stock | | 0.0 | 0.0 | 494000000.0 | 247000000.0 | 0.0 |
| Issuance Of Debt | | 2541000000.0 | 6044000000.0 | 3955000000.0 | 4150000000.0 | 3714000000.0 |
| Long Term Debt Issuance | | 2089000000.0 | 6044000000.0 | 3955000000.0 | 3094000000.0 | 3714000000.0 |
| Long Term Debt Payments | | -2280000000.0 | -3190000000.0 | -1050000000.0 | -1617000000.0 | -1579000000.0 |
| Net Business Purchase And Sale | | 2075000000.0 | 144000000.0 | 0.0 | 1219000000.0 | 862000000.0 |
| Net Common Stock Issuance | | 0.0 | 0.0 | 494000000.0 | 247000000.0 | 0.0 |
| Net Income From Continuing Operations | | 1057000000.0 | 917000000.0 | 1019000000.0 | 936000000.0 | 1052000000.0 |
| Net Investment Purchase And Sale | 1320000000.0 | 702000000.0 | 0.0 | 0.0 | | |
| Net Issuance Payments Of Debt | | 187000000.0 | 1789000000.0 | 2362000000.0 | 2614000000.0 | 2130000000.0 |
| Net Long Term Debt Issuance | | -191000000.0 | 2854000000.0 | 2905000000.0 | 1477000000.0 | 2135000000.0 |
| Net Other Financing Charges | | -43000000.0 | -80000000.0 | -63000000.0 | -54000000.0 | -7000000.0 |
| Net Other Investing Changes | | 14000000.0 | 24000000.0 | 24000000.0 | -426000000.0 | -8000000.0 |
| Net Preferred Stock Issuance | | 0.0 | -800000000.0 | 0.0 | | 0.0 |
| Net Short Term Debt Issuance | | 378000000.0 | -1065000000.0 | -543000000.0 | 1137000000.0 | -5000000.0 |
| Operating Cash Flow | | 1810000000.0 | 3877000000.0 | 2139000000.0 | 1995000000.0 | 2486000000.0 |
| Operating Gains Losses | | -401000000.0 | 9000000.0 | -6000000.0 | 39000000.0 | 45000000.0 |
| Other Non Cash Items | | 44000000.0 | 28000000.0 | -16000000.0 | -121000000.0 | -214000000.0 |
| Preferred Stock Dividend Paid | | -49000000.0 | -50000000.0 | 0.0 | | 0.0 |
| Preferred Stock Issuance | 0.0 | 0.0 | | | | |
| Preferred Stock Payments | | 0.0 | -800000000.0 | 0.0 | | 0.0 |
| Purchase Of Business | 0.0 | | 0.0 | 0.0 | | -357000000.0 |
| Repayment Of Debt | | -2354000000.0 | -4255000000.0 | -1593000000.0 | -1536000000.0 | -1584000000.0 |
| Repurchase Of Capital Stock | | 0.0 | -800000000.0 | 0.0 | | 0.0 |
| Sale Of Business | | 2075000000.0 | 144000000.0 | 0.0 | 1219000000.0 | 1219000000.0 |
| Sale Of Investment | 1320000000.0 | 702000000.0 | 0.0 | 0.0 | | |
| Short Term Debt Issuance | 1132000000.0 | 452000000.0 | | | | |
| Short Term Debt Payments | | -74000000.0 | -1065000000.0 | -543000000.0 | 81000000.0 | -5000000.0 |
| Unrealized Gain Loss On Investment Securities | 172000000.0 | | | | | |