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Divestitures - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Cash proceeds from divestitures, net $ 0 $ 0 $ 413,569
Gain on sales of businesses, net $ 0 $ 0 210,428
Polyolefin Catalysts      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Cash proceeds from divestitures, net     413,600
Gain on sales of businesses, net     $ 210,400