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Revenue
9 Months Ended
Sep. 30, 2021
Revenue Recognition and Deferred Revenue [Abstract]  
Revenue RevenueWe disaggregate our revenue by geographical region as follows:
Net Sales
Three months ended September 30,
Nine months ended September 30,
2021
2020
2021
2020
United States$373.8 $242.0 $997.9 $764.0 
Iceland207.6 150.9 555.5 452.0 
Total$581.4 $392.9 $1,553.4 $1,216.0