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Intangible Assets, including Goodwill (Details)
$ in Millions
6 Months Ended
Jun. 30, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Decrease in intangible assets, net $ (2.2)
Amortization expense for finite-lived intangible assets 6.9
Increase in value of intangible assets denominated in a foreign currency as a result of foreign exchange rate fluctuations 4.0
Goodwill, period increase (decrease) $ 1.7