Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Customer relationships	$ 191.6	$ 191.4
Noncompete agreements	10.7	28.2
Trademarks	70.6	70.6
Internal-use software licenses	16.7	16.5
Patents	2.8	2.8
Finite-lived intangible assets, gross	292.4	309.5
Accumulated amortization	(171.9)	(172.6)
Finite-lived intangible assets, net	120.5	136.9
Licenses	16.9	16.9
Other intangibles assets, net	$ 137.4	$ 153.8

Finite lived internal use software licenses.

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Amount, before amortization, of finite-lived asset representing customer relationship acquired in business combination, asset acquisition, and from joint venture formation.

+ References

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

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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/exampleRef
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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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- Definition

Gross carrying amount before accumulated amortization as of the balance sheet date of payments made to third parties in exchange for their agreement not to engage in specified competitive practices in specified geographic territories for a specified period of time.

+ References

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Gross carrying amount before accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights.

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Gross carrying amount before accumulated amortization as of the balance sheet date for the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a specified period of time.

+ References

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the capitalized costs to acquire rights under a license arrangement (for example, to sell specified products in a specified territory) having an indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
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