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Acquisitions Of Businesses (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) Company | Dec. 31, 2023 USD ($) Company | Dec. 31, 2022 USD ($) Company
Business Acquisition [Line Items] |  |  |
Number of businesses acquired | Company | 7 | 8 | 6
Goodwill ascribed | $ 1,018,415 | $ 956,549 | $ 919,151
2022 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price |  |  | 100,800
Working capital acquired |  |  | 7,100
Other net liabilities acquired |  |  | 1,100
Goodwill ascribed |  |  | 28,900
Identifiable intangible assets ascribed |  |  | $ 65,900
2023 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price |  | 99,600 |
Working capital acquired |  | 9,100 |
Other net liabilities acquired |  | 6,100 |
Goodwill ascribed |  | 37,400 |
Identifiable intangible assets ascribed |  | 59,200 |
Goodwill and identifiable intangible assets, tax deductible amount |  | $ 29,600 |
2024Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price | 231,100 |  |
Working capital acquired | 29,000 |  |
Other net assets acquired | 1,100 |  |
Goodwill ascribed | 61,900 |  |
Identifiable intangible assets ascribed | $ 139,100 |  |

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