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Goodwill and Identifiable Intangible Assets - Summary of Gross Carrying Value and Accumulated Amortization By Class of Identifiable Intangible Assets (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | $ 1,119.2 | $ 1,068.4
Amortizable intangible assets, Accumulated Amortization |  | (456.4) | (415.5)
Amortizable intangible assets, Net Book Value |  | 662.8 | 652.9
Total identifiable intangibles |  |  |
Total identifiable intangible assets, Gross Carrying Amounts |  | 1,220.4 | 1,169.6
Total identifiable intangibles, Accumulated Amortization |  | (500.9) | (460.0)
Total identifiable intangibles, Net Book Value |  | 719.5 | 709.6
Trade Names |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 657.9 | 627.5
Amortizable intangible assets, Accumulated Amortization |  | (174.0) | (157.5)
Amortizable intangible assets, Net Book Value |  | 483.9 | 470.0
Customer and contractual relationships |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 370.7 | 350.7
Amortizable intangible assets, Accumulated Amortization |  | (250.8) | (230.0)
Amortizable intangible assets, Net Book Value |  | 119.9 | 120.7
Vendor Relationships |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 82.4 | 82.4
Amortizable intangible assets, Accumulated Amortization |  | (24.9) | (22.2)
Amortizable intangible assets, Net Book Value |  | 57.5 | 60.2
Patents |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 8.2 | 7.8
Amortizable intangible assets, Accumulated Amortization |  | (6.7) | (5.8)
Amortizable intangible assets, Net Book Value |  | 1.5 | 2.0
Trade Names |  |  |
Indefinite-lived intangible assets: |  |  |
Indefinite-lived intangible assets, Gross Carrying Amount | [1] | 101.2 | 101.2
Indefinite-lived intangible asset, Accumulated Amortization | [1] | (44.5) | (44.5)
Indefinite-lived intangible assets, Net Book Value | [1] | $ 56.7 | $ 56.7
[1] | Accumulated amortization prior to the adoption of authoritative guidance on goodwill and other intangible assets, at which time further amortization ceased.

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- Definition Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(15)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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