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Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Summary of customer relationships
Accumulated amortization	$ (438.5)	$ (417.3)
Carrying value	136.1	135.9
Customer relationships
Summary of customer relationships
Gross carrying amount	574.6	553.2
Accumulated amortization	(438.5)	(417.3)
Carrying value	$ 136.1	$ 135.9
Customer relationships | Minimum
Summary of customer relationships
Useful lives	5 years
Customer relationships | Maximum
Summary of customer relationships
Useful lives	19 years

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Useful life of finite-lived intangible 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
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-Section 50
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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 928
-SubTopic 340
-Name Accounting Standards Codification
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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