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Acquisitions Of Businesses (Details) $ in Thousands		2 Months Ended	3 Months Ended		12 Months Ended
	Feb. 03, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2025 USD ($) Company	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) Company
Business Acquisition [Line Items]
Number of businesses acquired | Company			2		7
Goodwill		$ 1,336,557	$ 1,336,557		$ 1,018,415
Revenues			3,867,372	$ 3,432,276
Operating income			318,756	259,953
Amortization of identifiable intangible assets			26,363	$ 16,251
2024Acquisitions
Business Acquisition [Line Items]
Purchase price					231,100
Working capital acquired					29,000
Other net assets					1,100
Goodwill					61,900
Identifiable intangible assets					$ 139,100
MillerElectric
Business Acquisition [Line Items]
Purchase price	$ 868,600
Goodwill	317,354
Identifiable intangible assets	$ 475,000
Business acquisition, percentage acquired	100.00%
Revenues		183,100
Operating income		12,700
Amortization of identifiable intangible assets		7,400
Business acquisition, transaction costs		$ 9,400	$ 9,400

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