Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Millions			9 Months Ended
	May 12, 2023	May 02, 2023	Sep. 30, 2023	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 189.0
Goodwill, Acquired During Period			248.8
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill, Acquired During Period			248.8
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			189.0
Business Acquisition [Line Items]
Acquisitions of businesses, net of cash acquired			510.2	$ 109.6
Goodwill, Acquired During Period			248.8
Customer Relationships [Member]
Business Combination and Asset Acquisition [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 131.9
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			17 years
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			17 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 131.9
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			17 years
Other Intangible Assets [Member]
Business Combination and Asset Acquisition [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 57.1
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 57.1
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years
MTA
Business Combination and Asset Acquisition [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		$ 93.3
Goodwill, Acquired During Period		113.0
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill, Acquired During Period		113.0
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		93.3
Business Acquisition [Line Items]
Acquisitions of businesses, net of cash acquired		224.4
Goodwill, Acquired During Period		$ 113.0
Helmer Acquisition
Business Combination and Asset Acquisition [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 95.7
Goodwill, Acquired During Period	130.0
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	130.0
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	95.7
Business Acquisition [Line Items]
Acquisitions of businesses, net of cash acquired	266.4
Goodwill, Acquired During Period	$ 130.0