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Derivatives (Details) - Foreign Currency Forward £ in Millions, $ in Millions | Jun. 30, 2020 USD ($) | Jun. 30, 2020 GBP (£) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 GBP (£)
--- | --- | --- | --- | ---
Derivative [Line Items] |  |  |  |
Derivative liability, notional amount | £ |  | £ 50.3 |  |
Derivative asset, notional amount | £ |  |  |  | £ 53.0
Other Current Liabilities |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative liability | $ | $ 1.2 |  |  |
Receivables |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative asset | $ |  |  | $ 3.1 |

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