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Goodwill and Identifiable Intangible Assets, Net - Summary of Identifiable Intangible Assets with Definite and Indefinite Useful Lives (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 308.4 | $ 200.1
Accumulated Amortization | (135.2) | (107.3)
Total | 173.2 | 92.8
Indefinite-lived intangible assets |  |
Trademarks and tradenames with indefinite lives, Net | 8.9 | 8.9
Total identifiable intangible assets, Gross Carrying Value | 317.3 | 209.0
Identifiable intangible assets, net | 182.1 | 101.7
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 102.0 | 72.4
Accumulated Amortization | (30.5) | (22.3)
Total | 71.5 | 50.1
Trademarks and tradenames |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 31.1 | 15.1
Accumulated Amortization | (4.3) | (1.6)
Total | 26.8 | 13.5
Software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 95.3 | 62.2
Accumulated Amortization | (62.8) | (49.8)
Total | 32.5 | 12.4
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 66.8 | 37.2
Accumulated Amortization | (27.2) | (23.5)
Total | 39.6 | 13.7
Contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 13.2 | 13.2
Accumulated Amortization | (10.4) | (10.1)
Total | $ 2.8 | $ 3.1

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