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Business Combinations - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) acquistion	Sep. 30, 2023 USD ($) acquistion
Business Acquisition [Line Items]
Number of businesses acquired | acquistion			6	6
Number of insignificant acquisitions | acquistion			1	1
Acquisition-related costs	$ 0.5	$ 0.2	$ 1.6	$ 1.3
Goodwill deduction for tax purposes	15.8		15.8
Amortization	10.5	11.0	31.7	33.7
Income tax expense	25.3	24.8	67.3	63.9
Combined Business Acquisitions
Business Acquisition [Line Items]
Amortization	0.1	0.7	0.9	2.6
Income tax expense	$ 0.1	$ 0.5	$ 0.8	$ 1.6
Other
Business Acquisition [Line Items]
Contingent payment period (in years)			1 year

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Number Of Insignificant Business Combinations

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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