Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions Related Party Transactions (Details)

v3.19.1
Related Party Transactions Related Party Transactions (Details)
3 Months Ended
Mar. 31, 2019
USD ($)
Sep. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Mar. 31, 2018
USD ($)
Jan. 01, 2019
Dec. 31, 2018
USD ($)
Mar. 31, 2018
EUR (€)
Related Party Transaction [Line Items]              
Non-controlling Interest, Ownership Percentage by Parent 60.00%       60.00%    
Payments of Ordinary Dividends, Noncontrolling Interest   $ 20,000,000          
Restricted Cash, Current $ 0     $ 0   $ 13,970,000  
Swire Resources [Member]              
Related Party Transaction [Line Items]              
Dividend Payable to Parent $ 31,998,000            
United States of America, Dollars              
Related Party Transaction [Line Items]              
Due from Joint Ventures     $ 53,330,000        
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders     21,300,000 $ 3,900,000      
China, Yuan Renminbi              
Related Party Transaction [Line Items]              
Due from Joint Ventures     $ 341,347,000        
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders   $ 136,500,000          
European Subsidiary [Member] | Unsecured And Uncommitted Credit Line1 [Member]              
Related Party Transaction [Line Items]              
Line of Credit Facility, Maximum Borrowing Capacity | €             € 25,800,000