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Income Taxes - Summary of Open Tax Positions (Details)
 12 Months Ended
Dec. 31, 2020
Minimum [Member] | United States Federal [Member]  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2016
Minimum [Member] | United States State [Member]  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2013
Minimum [Member] | GERMANY  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2013 [1]
Minimum [Member] | HONG KONG  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2013
Minimum [Member] | ITALY  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2013 [1]
Minimum [Member] | SWEDEN  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2014
Minimum [Member] | UNITED KINGDOM  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2016
Maximum [Member] | United States Federal [Member]  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020
Maximum [Member] | United States State [Member]  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020
Maximum [Member] | GERMANY  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020 [1]
Maximum [Member] | HONG KONG  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020
Maximum [Member] | ITALY  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020 [1]
Maximum [Member] | SWEDEN  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020
Maximum [Member] | UNITED KINGDOM  
Income Tax Contingency [Line Items]  
Open Tax Years by Major Tax Jurisdiction 2020
[1] Includes federal as well as local jurisdictions.