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Inventories - Net Components of Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 1,372,234 $ 1,610,742
Work in process 126,231 144,639
Raw materials 414,555 526,947
Total inventories $ 1,913,020 $ 2,282,328