| | 2019-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-06-30 | 2025-12-31 | 2026-06-30 |
| Amortization Cash Flow | 71000.0 | -154000.0 | 0.0 | 0.0 | | | | |
| Amortization Of Intangibles | 71000.0 | -154000.0 | 0.0 | 0.0 | | | | |
| Asset Impairment Charge | | | 4780000.0 | 3647000.0 | 5155000.0 | 5834000.0 | 7735000.0 | 7297000.0 |
| Beginning Cash Position | | | 360236000.0 | 137172000.0 | 139995000.0 | 138421000.0 | 160166000.0 | 131954000.0 |
| Capital Expenditure | | | -232241000.0 | -333540000.0 | -318689000.0 | -309620000.0 | -359059000.0 | -373974000.0 |
| Capital Expenditure Reported | | | -228191000.0 | -331689000.0 | -315923000.0 | -306756000.0 | -354476000.0 | -368457000.0 |
| Cash Dividends Paid | | | -934101000.0 | -993238000.0 | -1021436000.0 | -1033153000.0 | -1047669000.0 | -1053354000.0 |
| Cash Flow From Continuing Financing Activities | | | -1785612000.0 | -1120471000.0 | -376952000.0 | 145946000.0 | -1328713000.0 | -1707315000.0 |
| Cash Flow From Continuing Investing Activities | | | 107792000.0 | -409504000.0 | -1176484000.0 | -1693122000.0 | -321362000.0 | 152650000.0 |
| Cash Flow From Continuing Operating Activities | | | 1454756000.0 | 1532798000.0 | 1573607000.0 | 1540709000.0 | 1648763000.0 | 1566091000.0 |
| Change In Account Payable | | | -266000.0 | 8911000.0 | 3249000.0 | -4630000.0 | 15368000.0 | 10871000.0 |
| Change In Accrued Expense | | | -3200000.0 | -594000.0 | 8460000.0 | 10109000.0 | -316000.0 | -2244000.0 |
| Change In Interest Payable | | | -3200000.0 | -594000.0 | 8460000.0 | 10109000.0 | -316000.0 | -2244000.0 |
| Change In Other Current Assets | | | 10893000.0 | -10203000.0 | -11813000.0 | -60816000.0 | -8745000.0 | -6906000.0 |
| Change In Other Current Liabilities | | | -14918000.0 | 3807000.0 | 32805000.0 | -1385000.0 | 33929000.0 | 4320000.0 |
| Change In Payable | | | -266000.0 | 8911000.0 | 3249000.0 | -4630000.0 | 15368000.0 | 10871000.0 |
| Change In Payables And Accrued Expense | | | -3466000.0 | 8317000.0 | 11709000.0 | 5479000.0 | 15052000.0 | 8627000.0 |
| Change In Prepaid Assets | | | 2799000.0 | 238000.0 | 6433000.0 | 11234000.0 | 6064000.0 | 1514000.0 |
| Change In Working Capital | | | -4692000.0 | 2159000.0 | 39134000.0 | -45488000.0 | 46300000.0 | 7555000.0 |
| Changes In Cash | | | -223064000.0 | 2823000.0 | 20171000.0 | -6467000.0 | -1312000.0 | 11426000.0 |
| Common Stock Dividend Paid | | | -931783000.0 | -990148000.0 | -1019050000.0 | -1031376000.0 | -1046247000.0 | -1051932000.0 |
| Common Stock Issuance | | 0.0 | 139623000.0 | 0.0 | 0.0 | | | |
| Common Stock Payments | | | 0.0 | -49105000.0 | -38474000.0 | 0.0 | -280720000.0 | -500105000.0 |
| Depreciation | | | 894325000.0 | 901504000.0 | 966739000.0 | 1014206000.0 | 1023235000.0 | 1019476000.0 |
| Depreciation Amortization Depletion | | | 894325000.0 | 901504000.0 | 966739000.0 | 1014206000.0 | 1023235000.0 | 1019476000.0 |
| Depreciation And Amortization | | | 894325000.0 | 901504000.0 | 966739000.0 | 1014206000.0 | 1023235000.0 | 1019476000.0 |
| Dividend Received CFO | | | 398000.0 | 559000.0 | 555000.0 | 517000.0 | 4540000.0 | 8629000.0 |
| Dividends Received CFI | | | 300000.0 | 42000.0 | 1409000.0 | 1724000.0 | 13880000.0 | 15593000.0 |
| Earnings Losses From Equity Investments | | | 5031000.0 | 5378000.0 | 8974000.0 | 17009000.0 | 18915000.0 | 11868000.0 |
| End Cash Position | | | 137172000.0 | 139995000.0 | 160166000.0 | 131954000.0 | 158854000.0 | 143380000.0 |
| Financing Cash Flow | | | -1785612000.0 | -1120471000.0 | -376952000.0 | 145946000.0 | -1328713000.0 | -1707315000.0 |
| Free Cash Flow | | | 1222515000.0 | 1199258000.0 | 1254918000.0 | 1231089000.0 | 1289704000.0 | 1192117000.0 |
| Gain Loss On Investment Securities | | | -293266000.0 | -280318000.0 | -542317000.0 | -550075000.0 | -624758000.0 | -406171000.0 |
| Income Tax Paid Supplemental Data | 585000.0 | 1179000.0 | 748000.0 | 1091000.0 | 1339000.0 | 1382000.0 | | |
| Interest Paid Supplemental Data | | 252838000.0 | 267612000.0 | 248990000.0 | 241034000.0 | 253812000.0 | | |
| Interest Received CFI | | -15932000.0 | | | | | | |
| Investing Cash Flow | | | 107792000.0 | -409504000.0 | -1176484000.0 | -1693122000.0 | -321362000.0 | 152650000.0 |
| Issuance Of Capital Stock | | 0.0 | 139623000.0 | 0.0 | 0.0 | | | |
| Issuance Of Debt | | | 6084137000.0 | 6696964000.0 | 34106257000.0 | 49876047000.0 | 48403919000.0 | 56019199000.0 |
| Long Term Debt Issuance | | | 48054000.0 | 572896000.0 | 597954000.0 | 1096534000.0 | 498580000.0 | 0.0 |
| Long Term Debt Payments | | | -792316000.0 | -938614000.0 | -8980000.0 | -496953000.0 | -497686000.0 | -9752000.0 |
| Net Business Purchase And Sale | | | -159701000.0 | -47872000.0 | -109721000.0 | -165773000.0 | -254075000.0 | -144363000.0 |
| Net Common Stock Issuance | | | 139623000.0 | -49105000.0 | -38474000.0 | 0.0 | -280720000.0 | -500105000.0 |
| Net Income From Continuing Operations | | | 806995000.0 | 868488000.0 | 1070975000.0 | 1045971000.0 | 1151949000.0 | 899207000.0 |
| Net Investment Properties Purchase And Sale | | | 497911000.0 | -28676000.0 | -764524000.0 | -1227396000.0 | 333857000.0 | 697137000.0 |
| Net Investment Purchase And Sale | | | 1523000.0 | 542000.0 | 15041000.0 | 7943000.0 | 790000.0 | 15012000.0 |
| Net Issuance Payments Of Debt | | | -929337000.0 | -86542000.0 | 723522000.0 | 1210844000.0 | 43863000.0 | -124053000.0 |
| Net Long Term Debt Issuance | | | -744262000.0 | -365718000.0 | 588974000.0 | 599581000.0 | 894000.0 | -9752000.0 |
| Net Other Financing Charges | | | -91044000.0 | -18735000.0 | -45517000.0 | -56108000.0 | -52406000.0 | -39702000.0 |
| Net Other Investing Changes | | | | | | | -56755000.0 | |
| Net PPEPurchase And Sale | | | -4050000.0 | -1851000.0 | -2766000.0 | -2864000.0 | -4583000.0 | -5517000.0 |
| Net Preferred Stock Issuance | | | 0.0 | 0.0 | -21569000.0 | 0.0 | 0.0 | |
| Net Short Term Debt Issuance | | | -185075000.0 | 279176000.0 | 134548000.0 | 611263000.0 | 42969000.0 | -114301000.0 |
| Operating Cash Flow | | | 1454756000.0 | 1532798000.0 | 1573607000.0 | 1540709000.0 | 1648763000.0 | 1566091000.0 |
| Operating Gains Losses | | | -288235000.0 | -274940000.0 | -533343000.0 | -533066000.0 | -605843000.0 | -394303000.0 |
| Other Non Cash Items | | | 13733000.0 | 13032000.0 | 12985000.0 | 13497000.0 | 14036000.0 | 14050000.0 |
| Preferred Stock Dividend Paid | | | -2318000.0 | -3090000.0 | -2386000.0 | -1777000.0 | -1422000.0 | -1422000.0 |
| Preferred Stock Payments | | | 0.0 | 0.0 | -21569000.0 | 0.0 | 0.0 | |
| Proceeds From Stock Option Exercised | | | 29247000.0 | 27149000.0 | 26522000.0 | 24363000.0 | 8219000.0 | 9899000.0 |
| Purchase Of Business | | | -159701000.0 | -49980000.0 | -109721000.0 | -165773000.0 | -254075000.0 | -144363000.0 |
| Purchase Of Investment | | | -2061000.0 | -2500000.0 | 0.0 | | -250000.0 | |
| Purchase Of Investment Properties | | | -222391000.0 | -402694000.0 | -1724922000.0 | -2200730000.0 | -773402000.0 | -220262000.0 |
| Purchase Of PPE | | | -4050000.0 | -1851000.0 | -2766000.0 | -2864000.0 | -4583000.0 | -5517000.0 |
| Repayment Of Debt | | | -7013474000.0 | -6783506000.0 | -33382735000.0 | -48665203000.0 | -48360056000.0 | -56143252000.0 |
| Repurchase Of Capital Stock | | | 0.0 | -49105000.0 | -60043000.0 | 0.0 | -280720000.0 | -500105000.0 |
| Sale Of Business | | 0.0 | 0.0 | 2108000.0 | 0.0 | | | |
| Sale Of Investment | | | 3584000.0 | 3042000.0 | 15041000.0 | 7943000.0 | 1040000.0 | 15262000.0 |
| Sale Of Investment Properties | | | 720302000.0 | 374018000.0 | 960398000.0 | 973334000.0 | 1107259000.0 | 917399000.0 |
| Short Term Debt Issuance | | | 6036083000.0 | 6124068000.0 | 33508303000.0 | 48779513000.0 | 47905339000.0 | 56019199000.0 |
| Short Term Debt Payments | | | -6221158000.0 | -5844892000.0 | -33373755000.0 | -48168250000.0 | -47862370000.0 | -56133500000.0 |
| Stock Based Compensation | | | 29513000.0 | 31815000.0 | 31287000.0 | 31501000.0 | 32210000.0 | 29820000.0 |
| Unrealized Gain Loss On Investment Securities | | | -2061000.0 | -13466000.0 | -19880000.0 | 7737000.0 | -25399000.0 | -25640000.0 |
