XML 196 R165.htm IDEA: XBRL DOCUMENT v3.10.0.1
Proposed Merger With GE Transportation (Q3) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Oct. 12, 2018
Sep. 14, 2018
Jun. 08, 2018
Business Acquisition [Line Items]              
Equity issued in acquisition   $ 25,500 $ 534,679 $ 0      
Debt issued           $ 2,500,000  
Floating Rate Senior Notes | Senior Notes              
Business Acquisition [Line Items]              
Debt issued           500,000  
Senior Notes due 2024 | Senior Notes              
Business Acquisition [Line Items]              
Debt issued           750,000  
Senior Notes due 2028 | Senior Notes              
Business Acquisition [Line Items]              
Debt issued           $ 1,250,000  
Delayed Draw Term Loan | Line of Credit              
Business Acquisition [Line Items]              
Delayed draw term loan             $ 400,000
Scenario Forecast | GE Transportation              
Business Acquisition [Line Items]              
Cash payment for acquisition $ 2,900,000            
Outstanding shares retained (as a percent) 49.90%            
Equity issued in acquisition $ 9,398,000            
Business combination, consideration transferred $ 12,800,000            
Scenario Forecast | GE and Pre-Merger Holders | GE Transportation              
Business Acquisition [Line Items]              
Outstanding shares transferred (as a percent) 50.10%            
Scenario Forecast | General Electric Company | GE Transportation              
Business Acquisition [Line Items]              
Outstanding shares transferred (as a percent) 9.90%            
Cash to be received $ 3,370,000            
Subsequent Event | GE Transportation              
Business Acquisition [Line Items]              
Closing sale price (in dollars per share)         $ 95.43    
Minimum | Scenario Forecast | General Electric Company | GE Transportation              
Business Acquisition [Line Items]              
Period for reverting shares 2 years            
Maximum | Scenario Forecast | General Electric Company | GE Transportation              
Business Acquisition [Line Items]              
Period for reverting shares 3 years