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Fair Value Measurements (Details) $ in Millions | Dec. 31, 2020 USD ($) contract | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | --- | ---
Cash Flow Hedging |  |  |
Fair value of assets and liabilities measured on recurring basis |  |  |
Number of forward contracts | contract | 2 |  |
Fair value measurements recurring basis |  |  |
Fair value of assets and liabilities measured on recurring basis |  |  |
Short-term investments | $ 36.1 |  | $ 17.4
Forward contracts | (2.7) |  | (1.3)
Contingent consideration |  |  | (75.0)
Total liability |  |  | (58.9)
Total asset | 33.4 |  |
Fair value measurements recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Fair value of assets and liabilities measured on recurring basis |  |  |
Short-term investments | 36.1 |  | 17.4
Forward contracts | 0.0 |  | 0.0
Contingent consideration |  |  | 0.0
Total asset | 36.1 |  | 17.4
Fair value measurements recurring basis | Significant Observable Inputs (Level 2) |  |  |
Fair value of assets and liabilities measured on recurring basis |  |  |
Short-term investments | 0.0 |  | 0.0
Forward contracts | (2.7) |  | (1.3)
Contingent consideration |  |  | 0.0
Total liability | (2.7) |  | (1.3)
Fair value measurements recurring basis | Significant Unobservable Inputs (Level 3) |  |  |
Fair value of assets and liabilities measured on recurring basis |  |  |
Short-term investments | 0.0 |  | 0.0
Forward contracts | 0.0 |  | 0.0
Contingent consideration |  |  | (75.0)
Total liability | $ 0.0 |  | $ (75.0)
SSI Controls Technologies |  |  |
Fair value of assets and liabilities measured on recurring basis |  |  |
Contingent consideration |  | $ (75.0) |

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