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Organization (Details)
12 Months Ended
Sep. 01, 2017
USD ($)
Dec. 31, 2018
USD ($)
segment
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Aug. 14, 2017
USD ($)
Business Acquisition [Line Items]          
Limited liability company, ownership interest owned   100.00%      
Payments to acquire business   $ 0 $ 1,325,759,000 $ 25,394,000  
Number of divisions that constitute reportable segments | segment   4      
Class A Convertible Preferred Stock Units          
Business Acquisition [Line Items]          
Private placement of convertible preferred units $ 750,000,000        
Class A Convertible Preferred Stock Units | Private Placement          
Business Acquisition [Line Items]          
Private placement of convertible preferred units 750,000,000        
6.500% senior unsecured notes          
Business Acquisition [Line Items]          
Debt issued, aggregate principal amount   $ 550,000,000 $ 550,000,000    
Alkali Business          
Business Acquisition [Line Items]          
Payments to acquire business 1,325,000,000        
Alkali Business | Class A Convertible Preferred Stock Units | Private Placement          
Business Acquisition [Line Items]          
Private placement of convertible preferred units 750,000,000        
Alkali Business | 6.500% senior unsecured notes          
Business Acquisition [Line Items]          
Debt issued, aggregate principal amount $ 550,000,000       $ 550,000,000