Goodwill and Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in Years)	6 years 9 months 18 days	7 years 3 months 18 days
Gross Carrying Amount	$ 591.7	$ 591.7
Accumulated Amortization	$ 390.4	$ 362.1
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in Years)	6 years 9 months 18 days	7 years 4 months 24 days
Gross Carrying Amount	$ 546.0	$ 546.0
Accumulated Amortization	$ 353.6	$ 326.9
Trademarks and Trade Names
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in Years)	6 years 1 month 6 days	6 years 6 months
Gross Carrying Amount	$ 41.3	$ 41.3
Accumulated Amortization	$ 32.4	$ 30.9
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in Years)	2 years 2 months 12 days	2 years 10 months 24 days
Gross Carrying Amount	$ 4.4	$ 4.4
Accumulated Amortization	$ 4.4	$ 4.3