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Goodwill and Intangible Assets - Schedule of Balances of Acquired Intangible Assets, Excluding Goodwill (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Mar. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]      
Original cost   $ 211.7 $ 196.2
Accumulated amortization   (145.3) (133.1)
Carrying value   66.4 63.1
Customer Lists      
Finite-Lived Intangible Assets [Line Items]      
Original cost   165.5 150.6
Accumulated amortization   (109.7) (100.8)
Carrying value   $ 55.8 49.8
Weighted average original life (in years) 15 years 14 years  
Trade Names      
Finite-Lived Intangible Assets [Line Items]      
Original cost   $ 29.6 29.3
Accumulated amortization   (21.6) (19.2)
Carrying value   $ 8.0 10.1
Weighted average original life (in years) 11 years 10 years  
Technology      
Finite-Lived Intangible Assets [Line Items]      
Original cost   $ 16.6 16.3
Accumulated amortization   (14.0) (13.1)
Carrying value   $ 2.6 $ 3.2
Weighted average original life (in years) 11 years 12 years