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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Intangible Assets [Line Items] |  |
Gross Carrying Amount, amortizable | $ 824.8 | $ 825.9
Accumulated Amortization | (282.9) | (254.2)
Net, amortizable | 541.9 | 571.7
Non-amortizable | 4.8 | 4.8
Less: intangible assets held for sale, gross | (211.5) |
Less: intangible assets held for sale, accumulated amortization | 91.6 |
Less: intangible assets held for sale, net | (119.9) |
Gross Carrying Amount, total | 618.1 | 830.7
Accumulated Amortization, total | (191.3) | (254.2)
Net, total | 426.8 | 576.5
Purchased licenses and technologies |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount, amortizable | 817.1 | 818.2
Accumulated Amortization | (276.6) | (248.2)
Net, amortizable | 540.5 | 570.0
Customer relationships |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount, amortizable | 4.7 | 4.7
Accumulated Amortization | (4.7) | (4.5)
Net, amortizable | 0.0 | 0.2
Trademarks |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount, amortizable | 3.0 | 3.0
Accumulated Amortization | (1.6) | (1.5)
Net, amortizable | 1.4 | 1.5
In-process research and development |  |
Intangible Assets [Line Items] |  |
Non-amortizable | $ 4.8 | $ 4.8

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