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
3 Months Ended
Mar. 31, 2018
USD ($)
product
Loss Contingencies [Line Items]  
Number of products in distribution channels | product 0
Patent Infringement | AES  
Loss Contingencies [Line Items]  
Damages sought $ 6.2
Recorded reserve 1.0
Patent Infringement | AES | Minimum  
Loss Contingencies [Line Items]  
Estimate of the value of the dispute 1.0
Patent Infringement | AES | Maximum  
Loss Contingencies [Line Items]  
Estimate of the value of the dispute $ 3.0