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Schedule of Outstanding Derivatives Designated as Cash Flow Hedges (Details) € in Millions, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) Integer	Dec. 31, 2020	Jun. 30, 2021 EUR (€) Integer
Interest Rate Swap [Member] \| London Interbank Offered Rate (LIBOR) Swap Rate [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Principal of face amount	$ 131.3		€ 95
Interest Rate Swap [Member] \| London Interbank Offered Rate (LIBOR) Swap Rate [Member] \| EUR [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional	The Company was party to two interest rate swaps with UBS AG designed to protect the Company against adverse fluctuations in interest rates by reducing its exposure to variability in cash flows on a portion of the previous floating rate debt facilities. The swaps fixed the variable interest rate of the debt facilities and provided protection over potential interest rate increases by providing a fixed rate of interest payment in return. The interest rate swaps were for £95 million ($131.3 million) at a fixed rate of 0.9255% based on the 6-month LIBOR rate and for €60 million ($71.2 million) at a fixed rate of 0.102% based on the 6-month EURIBOR rate.
Debt interest rate	0.9255%		0.9255%
Debt and Capital Lease Obligations, Noncurrent \| DefinedBenefitPlanAssumptionsUsedCalculatingBenefitsObligationAndNetPeriodicBenefitCostRateOfCompensationCPIInflation
Derivative Instruments, Gain (Loss) [Line Items]
Principal of face amount	$ 71.2		€ 60
Debt and Capital Lease Obligations, Noncurrent \| DefinedBenefitPlanAssumptionsUsedCalculatingBenefitsObligationAndNetPeriodicBenefitCostRateOfCompensationCPIInflation \| EUR [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt interest rate	0.102%		0.102%
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Cross Currency Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Instruments	2		2
Notional		£95 million ($131.3 million) at a fixed rate of 0.9255% based on the 6-month LIBOR rate and €60 million ($71.2 million) at a fixed rate of 0.102% based on the 6-month EURIBOR rate