| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 |
| Beginning Cash Position | | 1801000000.0 | 1511000000.0 | 206000000.0 | 179000000.0 | 103000000.0 |
| Capital Expenditure | | -2445000000.0 | -2848000000.0 | -3356000000.0 | -4030000000.0 | -4521000000.0 |
| Cash Dividends Paid | | -849000000.0 | -891000000.0 | -906000000.0 | -970000000.0 | -992000000.0 |
| Cash Flow From Continuing Financing Activities | | -542000000.0 | -912000000.0 | 2238000000.0 | 1434000000.0 | 1861000000.0 |
| Cash Flow From Continuing Investing Activities | | -2559000000.0 | -3076000000.0 | -3652000000.0 | -4350000000.0 | -4888000000.0 |
| Cash Flow From Continuing Operating Activities | | 2811000000.0 | 2683000000.0 | 1387000000.0 | 2891000000.0 | 3538000000.0 |
| Change In Account Payable | | 117000000.0 | 560000000.0 | -141000000.0 | 124000000.0 | 283000000.0 |
| Change In Accrued Expense | | 0.0 | -29000000.0 | 38000000.0 | -23000000.0 | 19000000.0 |
| Change In Income Tax Payable | | 7000000.0 | 22000000.0 | 32000000.0 | -126000000.0 | -53000000.0 |
| Change In Interest Payable | | 0.0 | -29000000.0 | 38000000.0 | -23000000.0 | 19000000.0 |
| Change In Inventory | | 57000000.0 | -161000000.0 | -91000000.0 | -37000000.0 | -59000000.0 |
| Change In Other Current Liabilities | | -52000000.0 | 21000000.0 | 41000000.0 | -141000000.0 | -240000000.0 |
| Change In Other Working Capital | | 31000000.0 | 111000000.0 | -218000000.0 | 90000000.0 | 193000000.0 |
| Change In Payable | | 124000000.0 | 582000000.0 | -109000000.0 | -2000000.0 | 230000000.0 |
| Change In Payables And Accrued Expense | | 124000000.0 | 553000000.0 | -71000000.0 | -25000000.0 | 249000000.0 |
| Change In Prepaid Assets | | 18000000.0 | -28000000.0 | -43000000.0 | -33000000.0 | -7000000.0 |
| Change In Receivables | | 160000000.0 | -292000000.0 | -13000000.0 | -249000000.0 | -88000000.0 |
| Change In Tax Payable | | 7000000.0 | 22000000.0 | 32000000.0 | -126000000.0 | -53000000.0 |
| Change In Working Capital | | 338000000.0 | 204000000.0 | -395000000.0 | -395000000.0 | 48000000.0 |
| Changes In Cash | | -290000000.0 | -1305000000.0 | -27000000.0 | -25000000.0 | 511000000.0 |
| Common Stock Dividend Paid | | -849000000.0 | -891000000.0 | -906000000.0 | -970000000.0 | -992000000.0 |
| Common Stock Issuance | 0.0 | 1000000000.0 | 0.0 | 0.0 | | |
| Deferred Income Tax | | 297000000.0 | 989000000.0 | 252000000.0 | 316000000.0 | 307000000.0 |
| Deferred Tax | | 297000000.0 | 989000000.0 | 252000000.0 | 316000000.0 | 307000000.0 |
| Depreciation | | 1664000000.0 | 1317000000.0 | 1280000000.0 | 1588000000.0 | 1581000000.0 |
| Depreciation Amortization Depletion | | 1664000000.0 | 1317000000.0 | 1280000000.0 | 1588000000.0 | 1581000000.0 |
| Depreciation And Amortization | | 1664000000.0 | 1317000000.0 | 1280000000.0 | 1588000000.0 | 1581000000.0 |
| End Cash Position | | 1511000000.0 | 206000000.0 | 179000000.0 | 154000000.0 | 614000000.0 |
| Financing Cash Flow | | -542000000.0 | -912000000.0 | 2238000000.0 | 1434000000.0 | 1861000000.0 |
| Free Cash Flow | | 2811000000.0 | -165000000.0 | -1969000000.0 | -1139000000.0 | -983000000.0 |
| Gain Loss On Sale Of Business | -76000000.0 | -109000000.0 | 0.0 | 0.0 | | |
| Income Tax Paid Supplemental Data | 6000000.0 | | 21000000.0 | 58000000.0 | 161000000.0 | |
| Interest Paid Supplemental Data | | 1085000000.0 | 1021000000.0 | 1002000000.0 | 1062000000.0 | |
| Investing Cash Flow | | -2559000000.0 | -3076000000.0 | -3652000000.0 | -4350000000.0 | -4888000000.0 |
| Issuance Of Capital Stock | 0.0 | 1000000000.0 | 0.0 | 0.0 | | |
| Issuance Of Debt | | 2100000000.0 | 800000000.0 | 3825000000.0 | 2100000000.0 | 5825000000.0 |
| Long Term Debt Issuance | | 2100000000.0 | 700000000.0 | 3150000000.0 | 2100000000.0 | 5825000000.0 |
| Long Term Debt Payments | | -532000000.0 | -3005000000.0 | -537000000.0 | -2760000000.0 | -3529000000.0 |
| Net Business Purchase And Sale | 0.0 | 155000000.0 | 0.0 | 0.0 | | |
| Net Common Stock Issuance | 0.0 | 1000000000.0 | 0.0 | 0.0 | | |
| Net Income From Continuing Operations | | 1283000000.0 | 439000000.0 | 1176000000.0 | 1127000000.0 | 1494000000.0 |
| Net Investment Purchase And Sale | | -2498000000.0 | -11000000.0 | -12000000.0 | -13000000.0 | -12000000.0 |
| Net Issuance Payments Of Debt | | -632000000.0 | -2205000000.0 | 3288000000.0 | -885000000.0 | 1901000000.0 |
| Net Long Term Debt Issuance | | 1568000000.0 | -2305000000.0 | 2613000000.0 | -660000000.0 | 2296000000.0 |
| Net Other Financing Charges | | -61000000.0 | 2184000000.0 | -144000000.0 | 3289000000.0 | 952000000.0 |
| Net Other Investing Changes | | -216000000.0 | -217000000.0 | -284000000.0 | -307000000.0 | -355000000.0 |
| Net PPEPurchase And Sale | | -2445000000.0 | -2848000000.0 | -3356000000.0 | -4030000000.0 | |
| Net Preferred Stock Issuance | 0.0 | | | | | |
| Net Short Term Debt Issuance | | -2200000000.0 | 100000000.0 | 675000000.0 | -225000000.0 | -395000000.0 |
| Operating Cash Flow | | 2811000000.0 | 2683000000.0 | 1387000000.0 | 2891000000.0 | 3538000000.0 |
| Operating Gains Losses | | -838000000.0 | -351000000.0 | 90000000.0 | -10000000.0 | |
| Other Non Cash Items | | 67000000.0 | 85000000.0 | -1016000000.0 | 265000000.0 | 105000000.0 |
| Pension And Employee Benefit Expense | | -682000000.0 | -351000000.0 | 69000000.0 | -10000000.0 | 3000000.0 |
| Preferred Stock Dividend Paid | 0.0 | 0.0 | | | | |
| Preferred Stock Issuance | 0.0 | | | | | |
| Purchase Of Investment | | -2546000000.0 | -59000000.0 | -50000000.0 | -134000000.0 | -146000000.0 |
| Purchase Of PPE | | -2445000000.0 | -2848000000.0 | -3356000000.0 | -4030000000.0 | |
| Repayment Of Debt | | -2732000000.0 | -3005000000.0 | -537000000.0 | -2985000000.0 | -3754000000.0 |
| Sale Of Business | 0.0 | 155000000.0 | 0.0 | 0.0 | | |
| Sale Of Investment | | 48000000.0 | 48000000.0 | 38000000.0 | 121000000.0 | 134000000.0 |
| Short Term Debt Issuance | | 0.0 | 100000000.0 | 675000000.0 | 0.0 | |
| Short Term Debt Payments | | -2200000000.0 | 0.0 | 0.0 | -225000000.0 | |