As we mentioned before the latest release of IntelliJ IDEA comes with better management for line separators.
The information about the line separators type used in the currently opened file is available now in the status bar.
Not a big surprise that it is possible to change the type of line endings for the current file via this control.
You can also perform a bulk change. Just select a target file or a directory in the project view and choose new separator via Main Menu → File → Line Separator.