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Fair Value Measurements (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 USD ($) contract | Dec. 31, 2020 USD ($)
Cash Flow Hedging |  |
Fair value of assets and liabilities measured on recurring basis |  |
Number of forward contracts | contract | 2 |
Maximum | Cash Flow Hedging |  |
Fair value of assets and liabilities measured on recurring basis |  |
Hedge expiration period | 1 year |
Fair value measurements recurring basis |  |
Fair value of assets and liabilities measured on recurring basis |  |
Short-term investments | $ 34.4 | $ 36.1
Forward contracts | (5.4) | (2.7)
Total asset | 29.0 | 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 | 34.4 | 36.1
Forward contracts | 0.0 | 0.0
Total asset | 34.4 | 36.1
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 | (5.4) | (2.7)
Total liability | (5.4) | (2.7)
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
Total asset | $ 0.0 | $ 0.0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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