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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 | Sep. 30, 2023 | Dec. 31, 2022
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Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | $ 930.7 | $ 817.1
Amortizable intangible assets, Accumulated Amortization |  | (366.9) | (336.2)
Amortizable intangible assets, Net Book Value |  | 563.8 | 480.9
Total identifiable intangibles |  |  |
Total identifiable intangible assets, Gross Carrying Amounts |  | 1,225.8 | 1,227.7
Total identifiable intangibles, Accumulated Amortization |  | (411.4) | (380.7)
Total identifiable intangibles, Net Book Value |  | 814.4 | 847.0
Trade Names |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 485.5 | 369.7
Amortizable intangible assets, Accumulated Amortization |  | (135.8) | (123.0)
Amortizable intangible assets, Net Book Value |  | 349.7 | 246.7
Customer and contractual relationships |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 354.9 | 356.9
Amortizable intangible assets, Accumulated Amortization |  | (211.2) | (198.2)
Amortizable intangible assets, Net Book Value |  | 143.7 | 158.7
Vendor Relationships |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 82.4 | 82.4
Amortizable intangible assets, Accumulated Amortization |  | (15.3) | (11.2)
Amortizable intangible assets, Net Book Value |  | 67.1 | 71.2
Patents |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 7.9 | 8.1
Amortizable intangible assets, Accumulated Amortization |  | (4.6) | (3.8)
Amortizable intangible assets, Net Book Value |  | 3.3 | 4.3
Trade Names |  |  |
Indefinite-lived intangible assets: |  |  |
Indefinite-lived intangible assets, Gross Carrying Amount | [1] | 295.1 | 410.6
Indefinite-lived intangible asset, Accumulated Amortization | [1] | (44.5) | (44.5)
Indefinite-lived intangible assets, Net Book Value | [1] | $ 250.6 | $ 366.1
[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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