libGDX with Gradle -> how to install?

Okay, I used libGDX always with the complete Source, now I try it with Gradle and I failed terribly.

I am using IntelliJ.

I generated an new Project with the libGDX Project Setup and I need Gradle to resolve the libGDX dependencies.
And well, … it´s not working.

I tried to import the Project directly with the build.gradle.
I settet in the Project Settings the Module Dependencies to Gradle Wrapper.
I created an 2nd Project.
I run and created the build.gradle
It has the same project tree like described at the libGDX Homepage.

But IntelliJ is not resolving the libGDX Libs.

What else do I have to do?