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Goodwill and Identifiable Intangible Assets, net - Summary of Identifiable Intangible Assets, net (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 322.7 | $ 321.5
Accumulated Amortization | (167.4) | (159.4)
Net | 155.3 | 162.1
Total identifiable intangible assets, net |  |
Gross Carrying Value | 331.6 | 330.4
Net | 164.2 | 171.0
Trademarks and tradenames with indefinite lives |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Trademarks and tradenames with indefinite lives | 8.9 | 8.9
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 103.4 | 105.2
Accumulated Amortization | (38.2) | (37.2)
Net | 65.2 | 68.0
Trademarks and tradenames with indefinite lives |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 31.1 | 31.3
Accumulated Amortization | (9.2) | (8.5)
Net | 21.9 | 22.8
Software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 109.6 | 104.7
Accumulated Amortization | (75.2) | (69.7)
Net | 34.4 | 35.0
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 65.1 | 66.7
Accumulated Amortization | (33.7) | (33.0)
Net | 31.4 | 33.7
Contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 13.5 | 13.6
Accumulated Amortization | (11.1) | (11.0)
Net | $ 2.4 | $ 2.6

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