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Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Original cost	$ 188.6	$ 191.1
Accumulated amortization	(124.4)	(114.7)
Carrying value	64.2	76.4
Customer Lists
Finite-Lived Intangible Assets [Line Items]
Original cost	144.6	146.6
Accumulated amortization	(94.2)	(87.5)
Carrying value	$ 50.4	$ 59.1
Weighted average original life (in years)	15 years	15 years
Trade Names
Finite-Lived Intangible Assets [Line Items]
Original cost	$ 28.1	$ 28.6
Accumulated amortization	(17.8)	(15.9)
Carrying value	$ 10.3	$ 12.7
Weighted average original life (in years)	11 years	11 years
Technology
Finite-Lived Intangible Assets [Line Items]
Original cost	$ 15.9	$ 15.9
Accumulated amortization	(12.4)	(11.3)
Carrying value	$ 3.5	$ 4.6
Weighted average original life (in years)	11 years	11 years

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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