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Equity - Schedule of Stockholders Equity (Parenthetical) (Details) - shares
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 14, 2018
Stockholders Equity Rollforward [Line Items]      
Shares Purchased for Tax Withholding for Share Based Compensation 104,000,000 133,000,000  
Layne Christensen Company [Member]      
Stockholders Equity Rollforward [Line Items]      
Stock issued during period, shares, acquisitions 5,624,000    
Stock-for-stock merger exchange ratio 0.27%    
Layne Christensen Company [Member] | 8.0 % Convertible Notes [Member]      
Stockholders Equity Rollforward [Line Items]      
Debt instrument, interest rate, stated percentage 8.00%   8.00%