IntelliJ IDEA 2017.1 shows "var" instead of actual type

This behavior is caused by the Advanced Java Folding plug-in. Either disable the plug-in or change its setting to not fold certain code elements.

To disable showing val/var instead of variable type go to Settings | Editor | General | Code Folding and UnCheck Variable Declaration

And just next to it Uncheck Getters and setters to start showing getter Setter method calls with full method name