By default, a list is shown in combination with the details of the selected item in that list.
To show the details of a selected item only:
1. Focus on the list you want to work with.
2. Click the vertical splitter between the list and the details and drag it completely to the left.
3. Only the details are displayed.
4. To have the split view again, click the splitter which is now situated on the left and drag it to the center again.