| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 |
| Beginning Cash Position | | 152000000.0 | 1046000000.0 | 683000000.0 | 965000000.0 | 1079000000.0 |
| Capital Expenditure | | -728000000.0 | -1710000000.0 | -2099000000.0 | -1771000000.0 | -1981000000.0 |
| Capital Expenditure Reported | | -728000000.0 | -1710000000.0 | -2099000000.0 | -1771000000.0 | -1981000000.0 |
| Cash Dividends Paid | | -780000000.0 | -1992000000.0 | -890000000.0 | -625000000.0 | -657000000.0 |
| Cash Flow From Continuing Financing Activities | | -1086000000.0 | -4145000000.0 | -1317000000.0 | 279000000.0 | 620000000.0 |
| Cash Flow From Continuing Investing Activities | | 313000000.0 | -1674000000.0 | -2059000000.0 | -1762000000.0 | -4944000000.0 |
| Cash Flow From Continuing Operating Activities | | 1667000000.0 | 5456000000.0 | 3658000000.0 | 2795000000.0 | 3461000000.0 |
| Change In Account Payable | | 47000000.0 | 96000000.0 | -180000000.0 | 15000000.0 | -65000000.0 |
| Change In Accrued Expense | | 6000000.0 | -5000000.0 | 0.0 | 6000000.0 | 40000000.0 |
| Change In Interest Payable | | 6000000.0 | -5000000.0 | 0.0 | 6000000.0 | 40000000.0 |
| Change In Inventory | | 5000000.0 | -24000000.0 | 4000000.0 | 13000000.0 | -9000000.0 |
| Change In Other Current Assets | | -4000000.0 | -4000000.0 | -3000000.0 | -3000000.0 | 17000000.0 |
| Change In Other Working Capital | | 31000000.0 | -65000000.0 | 38000000.0 | -96000000.0 | -48000000.0 |
| Change In Payable | | 47000000.0 | 96000000.0 | -180000000.0 | 15000000.0 | -65000000.0 |
| Change In Payables And Accrued Expense | | 53000000.0 | 91000000.0 | -180000000.0 | 21000000.0 | -25000000.0 |
| Change In Receivables | | -229000000.0 | -184000000.0 | 378000000.0 | -108000000.0 | -3000000.0 |
| Change In Working Capital | | -144000000.0 | -186000000.0 | 237000000.0 | -173000000.0 | -68000000.0 |
| Changes In Account Receivables | | -229000000.0 | -184000000.0 | 378000000.0 | -108000000.0 | -3000000.0 |
| Changes In Cash | | 894000000.0 | -363000000.0 | 282000000.0 | 1312000000.0 | -863000000.0 |
| Common Stock Dividend Paid | | -780000000.0 | -1992000000.0 | -890000000.0 | -625000000.0 | -657000000.0 |
| Common Stock Payments | | 0.0 | -1250000000.0 | -405000000.0 | -455000000.0 | -212000000.0 |
| Deferred Income Tax | | 126000000.0 | 235000000.0 | 74000000.0 | -145000000.0 | -61000000.0 |
| Deferred Tax | | 126000000.0 | 235000000.0 | 74000000.0 | -145000000.0 | -61000000.0 |
| Depletion | | 0.0 | 0.0 | 0.0 | 5000000.0 | 195000000.0 |
| Depreciation | | 693000000.0 | 1635000000.0 | 1641000000.0 | 1840000000.0 | 1855000000.0 |
| Depreciation Amortization Depletion | | 693000000.0 | 1635000000.0 | 1641000000.0 | 1845000000.0 | 2050000000.0 |
| Depreciation And Amortization | | 693000000.0 | 1635000000.0 | 1641000000.0 | 1840000000.0 | 1855000000.0 |
| Dividend Received CFO | 0.0 | 0.0 | | | | |
| Dividends Received CFI | 0.0 | 0.0 | | | | |
| Earnings Losses From Equity Investments | 59000.0 | 0.0 | | | | |
| End Cash Position | | 1046000000.0 | 683000000.0 | 965000000.0 | 2277000000.0 | 216000000.0 |
| Financing Cash Flow | | -1086000000.0 | -4145000000.0 | -1317000000.0 | 279000000.0 | 620000000.0 |
| Free Cash Flow | | 939000000.0 | 3746000000.0 | 1559000000.0 | 1024000000.0 | 1480000000.0 |
| Gain Loss On Investment Securities | | 221000000.0 | 463000000.0 | -230000000.0 | 3000000.0 | -133000000.0 |
| Income Tax Paid Supplemental Data | 10964000.0 | | 983000000.0 | 388000000.0 | 341000000.0 | |
| Interest Paid Supplemental Data | 57043000.0 | | 119000000.0 | 84000000.0 | 99000000.0 | |
| Investing Cash Flow | | 313000000.0 | -1674000000.0 | -2059000000.0 | -1762000000.0 | -4944000000.0 |
| Issuance Of Debt | | 100000000.0 | 0.0 | 0.0 | 1990000000.0 | 2841000000.0 |
| Long Term Debt Issuance | | 100000000.0 | 0.0 | 0.0 | 1990000000.0 | 2841000000.0 |
| Long Term Debt Payments | | -290000000.0 | -874000000.0 | 0.0 | -575000000.0 | -1275000000.0 |
| Net Business Purchase And Sale | -9000000.0 | 1033000000.0 | 0.0 | 0.0 | | |
| Net Common Stock Issuance | | 0.0 | -1250000000.0 | -405000000.0 | -455000000.0 | -212000000.0 |
| Net Income From Continuing Operations | | 1158000000.0 | 4065000000.0 | 1625000000.0 | 1121000000.0 | 1576000000.0 |
| Net Investment Purchase And Sale | | | 0.0 | 0.0 | 0.0 | 250000000.0 |
| Net Issuance Payments Of Debt | | -190000000.0 | -874000000.0 | 0.0 | 1415000000.0 | 1566000000.0 |
| Net Long Term Debt Issuance | | -190000000.0 | -874000000.0 | 0.0 | 1415000000.0 | 1566000000.0 |
| Net Other Financing Charges | | -118000000.0 | -29000000.0 | -22000000.0 | -56000000.0 | -77000000.0 |
| Net Other Investing Changes | | 8000000.0 | 36000000.0 | 40000000.0 | 9000000.0 | 9000000.0 |
| Net Preferred Stock Issuance | 0.0 | 0.0 | -10000000.0 | -1000000.0 | | |
| Operating Cash Flow | | 1667000000.0 | 5456000000.0 | 3658000000.0 | 2795000000.0 | 3461000000.0 |
| Operating Gains Losses | -61000000.0 | 223000000.0 | 436000000.0 | -242000000.0 | | |
| Other Non Cash Items | | -441000000.0 | -802000000.0 | 266000000.0 | 86000000.0 | 38000000.0 |
| Preferred Stock Payments | 0.0 | 0.0 | -10000000.0 | -1000000.0 | | |
| Proceeds From Stock Option Exercised | 0.0 | 2000000.0 | 12000000.0 | 2000000.0 | | |
| Purchase Of Business | -9000000.0 | 0.0 | 0.0 | | | |
| Purchase Of Investment | | | 0.0 | 0.0 | -250000000.0 | 0.0 |
| Repayment Of Debt | | -290000000.0 | -874000000.0 | 0.0 | -575000000.0 | -1275000000.0 |
| Repurchase Of Capital Stock | | 0.0 | -1250000000.0 | -405000000.0 | -455000000.0 | -212000000.0 |
| Sale Of Business | 0.0 | 1033000000.0 | 0.0 | 0.0 | | |
| Sale Of Investment | | | 0.0 | 0.0 | 250000000.0 | |
| Stock Based Compensation | | 52000000.0 | 73000000.0 | 57000000.0 | 61000000.0 | 66000000.0 |