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MERGER OF WABTEC WITH GE TRANSPORTATION (Details) - USD ($) | Feb. 25, 2019 | Feb. 22, 2019 | Dec. 31, 2018 | Sep. 14, 2018 | Jun. 08, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  | 96,614,946 |  |  | 96,034,352
Preferred stock, shares outstanding (in shares) |  |  | 0 |  |  | 0
GE Transportation | GE and Pre-Merger Holders |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of outstanding shares transferred |  |  | 49.20% |  |  |
GE Transportation | General Electric Company |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of outstanding shares transferred |  |  | 9.90% |  |  |
GE Transportation | General Electric Company | Convertible Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of outstanding shares transferred |  |  | 15.00% |  |  |
Senior Notes |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Debt instrument face amount |  |  |  | $ 2,500,000,000.0 |  |
Floating Rate Senior Notes | Senior Notes |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Debt instrument face amount |  |  |  | 500,000,000 |  |
Senior Notes Due 2024 | Senior Notes |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Debt instrument face amount |  |  |  | 750,000,000 |  |
Senior Notes Due 2028 | Senior Notes |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Debt instrument face amount |  |  |  | $ 1,250,000,000.00 |  |
Line of Credit | Delayed Draw Term Loan |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Revolving credit facility, amount |  |  |  |  | $ 400,000,000 |
Subsequent Event | GE Transportation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration transferred | $ 2,875,000,000 |  |  |  |  |
Business combination, consideration transferred |  | $ 10,200,000,000 |  |  |  |
Subsequent Event | GE Transportation | SpinCo Class B Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, consideration transferred | $ 10,000,000 |  |  |  |  |
Subsequent Event | GE Transportation | Convertible Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shares issuable (in shares) | 10,000 |  |  |  |  |
Wabtec | GE Transportation | SpinCo Class B Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  | 10,000 |  |  |
General Electric Company | GE Transportation | SpinCo Class A Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  | 15,000 |  |  |
General Electric Company | Subsequent Event | GE Transportation | SpinCo Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Common stock, shares outstanding (in shares) | 8,700,000,000 |  |  |  |  |
General Electric Company | Subsequent Event | GE Transportation | SpinCo Class A Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) | 15,000 |  |  |  |  |
General Electric Company | Subsequent Event | GE Transportation | SpinCo Class B Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) | 10,000 |  |  |  |  |
General Electric Company | Subsequent Event | GE Transportation | SpinCo Class C Preferred Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) | 1 |  |  |  |  |
General Electric Company | Minimum | GE Transportation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of common shares outstanding |  |  | 14.90% |  |  |
General Electric Company | Maximum | GE Transportation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of common shares outstanding |  |  | 19.90% |  |  |
Pre-merger Wabtec Stockholders | GE Transportation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of outstanding shares transferred |  |  | 50.80% |  |  |
Pre-merger Wabtec Stockholders | Maximum | GE Transportation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of common shares outstanding |  |  | 18.50% |  |  |

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