| | 2019-12-31 | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-06-30 |
| Amortization Cash Flow | 60516000.0 | | | | | |
| Amortization Of Intangibles | 60516000.0 | | | | | |
| Beginning Cash Position | | 872094000.0 | 912672000.0 | 667667000.0 | 614391000.0 | 477875000.0 |
| Capital Expenditure | | -35370000.0 | -23018000.0 | -24370000.0 | -25318000.0 | -37117000.0 |
| Capital Expenditure Reported | | -35370000.0 | -23018000.0 | -24370000.0 | -25318000.0 | -37117000.0 |
| Cash Flow From Continuing Financing Activities | | 96597000.0 | -245852000.0 | -245508000.0 | -231319000.0 | -56481000.0 |
| Cash Flow From Continuing Investing Activities | | -614253000.0 | -536813000.0 | -411368000.0 | -240042000.0 | -73790000.0 |
| Cash Flow From Continuing Operating Activities | | 547310000.0 | 549482000.0 | 631003000.0 | 717122000.0 | 757020000.0 |
| Change In Account Payable | | 21362000.0 | 53846000.0 | -8250000.0 | 27853000.0 | 16187000.0 |
| Change In Income Tax Payable | | 19713000.0 | -18429000.0 | 99000.0 | 13731000.0 | 4773000.0 |
| Change In Other Current Assets | | -14818000.0 | -3217000.0 | -3613000.0 | -8563000.0 | -514000.0 |
| Change In Other Current Liabilities | | 14802000.0 | -42000.0 | -14817000.0 | -8643000.0 | -2241000.0 |
| Change In Other Working Capital | | 5448000.0 | 26547000.0 | 33003000.0 | 34507000.0 | 57192000.0 |
| Change In Payable | | 41075000.0 | 35417000.0 | -8151000.0 | 41584000.0 | 20960000.0 |
| Change In Payables And Accrued Expense | | 41075000.0 | 35417000.0 | -8151000.0 | 41584000.0 | 20960000.0 |
| Change In Receivables | | -162631000.0 | -213333000.0 | -84727000.0 | -132720000.0 | -128801000.0 |
| Change In Tax Payable | | 19713000.0 | -18429000.0 | 99000.0 | 13731000.0 | 4773000.0 |
| Change In Working Capital | | -116124000.0 | -154628000.0 | -78305000.0 | -73835000.0 | -53404000.0 |
| Changes In Account Receivables | | -160319000.0 | -149017000.0 | -114986000.0 | -102516000.0 | -121144000.0 |
| Changes In Cash | | 29654000.0 | -233183000.0 | -25873000.0 | 245761000.0 | 626749000.0 |
| Common Stock Payments | | -161029000.0 | -134679000.0 | -205571000.0 | -196494000.0 | 0.0 |
| Deferred Income Tax | | -30932000.0 | -34490000.0 | -130716000.0 | -91306000.0 | -97126000.0 |
| Deferred Tax | | -30932000.0 | -34490000.0 | -130716000.0 | -91306000.0 | -97126000.0 |
| Depreciation | 18459000.0 | 106246000.0 | | | | |
| Depreciation Amortization Depletion | | 85275000.0 | 106867000.0 | 114563000.0 | 132504000.0 | 138904000.0 |
| Depreciation And Amortization | | 85275000.0 | 106867000.0 | 114563000.0 | 132504000.0 | 138904000.0 |
| Effect Of Exchange Rate Changes | | 10924000.0 | -11822000.0 | -27403000.0 | 49000.0 | -5666000.0 |
| End Cash Position | | 912672000.0 | 667667000.0 | 614391000.0 | 860201000.0 | 1104624000.0 |
| Financing Cash Flow | | 96597000.0 | -245852000.0 | -245508000.0 | -231319000.0 | -56481000.0 |
| Free Cash Flow | | 511940000.0 | 526464000.0 | 606633000.0 | 691804000.0 | 719903000.0 |
| Gain Loss On Investment Securities | | | -15139000.0 | | | |
| Income Tax Paid Supplemental Data | | 54174000.0 | 130426000.0 | 115339000.0 | 144117000.0 | 121019000.0 |
| Interest Paid Supplemental Data | | 11941000.0 | 11146000.0 | 20844000.0 | 46069000.0 | 48214000.0 |
| Investing Cash Flow | | -614253000.0 | -536813000.0 | -411368000.0 | -240042000.0 | -73790000.0 |
| Issuance Of Debt | 500000000.0 | 375000000.0 | 0.0 | 0.0 | | |
| Long Term Debt Issuance | 500000000.0 | 375000000.0 | 0.0 | 0.0 | | |
| Long Term Debt Payments | | -75000000.0 | -45000000.0 | 0.0 | 0.0 | |
| Net Business Purchase And Sale | | -572328000.0 | -510805000.0 | -386264000.0 | -208911000.0 | -12711000.0 |
| Net Common Stock Issuance | | -161029000.0 | -134679000.0 | -205571000.0 | -196494000.0 | 0.0 |
| Net Income From Continuing Operations | | 433887000.0 | 454627000.0 | 523710000.0 | 500412000.0 | 495076000.0 |
| Net Issuance Payments Of Debt | | 300000000.0 | -45000000.0 | 0.0 | 0.0 | |
| Net Long Term Debt Issuance | | 300000000.0 | -45000000.0 | 0.0 | 0.0 | |
| Net Other Financing Charges | | -71934000.0 | -97550000.0 | -65532000.0 | -64939000.0 | -83419000.0 |
| Net Other Investing Changes | | -6555000.0 | -2990000.0 | -734000.0 | -5813000.0 | -3935000.0 |
| Operating Cash Flow | | 547310000.0 | 549482000.0 | 631003000.0 | 717122000.0 | 757020000.0 |
| Operating Gains Losses | | | -15139000.0 | | | |
| Other Non Cash Items | | 23151000.0 | 24901000.0 | 27401000.0 | 24752000.0 | 25436000.0 |
| Proceeds From Stock Option Exercised | | 29560000.0 | 31377000.0 | 25595000.0 | 30114000.0 | 26938000.0 |
| Provisionand Write Offof Assets | | 6438000.0 | 1006000.0 | 6222000.0 | 2704000.0 | 1161000.0 |
| Purchase Of Business | | -572328000.0 | -510805000.0 | -386264000.0 | -208911000.0 | -12711000.0 |
| Repayment Of Debt | | -75000000.0 | -45000000.0 | 0.0 | 0.0 | |
| Repurchase Of Capital Stock | | -161029000.0 | -134679000.0 | -205571000.0 | -196494000.0 | 0.0 |
| Stock Based Compensation | | 145615000.0 | 166338000.0 | 168128000.0 | 221891000.0 | 246973000.0 |
