Quarterly report pursuant to Section 13 or 15(d)

Legal Proceedings Legal Proceedings (Details)

v3.8.0.1
Legal Proceedings Legal Proceedings (Details) - Germany - Lufthansa Technik AG
$ in Millions
9 Months Ended
Sep. 30, 2017
USD ($)
product
Loss Contingencies [Line Items]  
Number of products in distribution channels | product 0
Patent Infringement  
Loss Contingencies [Line Items]  
Appeal process duration (in years, up to) 2 years
Patent Infringement | AES | Minimum  
Loss Contingencies [Line Items]  
Estimate of the value of the dispute $ 1
Patent Infringement | AES | Maximum  
Loss Contingencies [Line Items]  
Estimate of the value of the dispute $ 3