‘Logged Hours’ is a brief view of the logged project hours of each team member.

In other words, ‘Logged Hours’ is a generalized part report of the ‘Timesheet Details’ report.  In ‘Logged Hours’, you can group the information by a team or a task:

In each table of this report, if opt for grouping by team or tasks, you can view the detailed information about logged hours of the current project: date, tasks, names and the team members, start/end time and whether these hours are billed, unbilled or non-billable.
Also, the data is not filtered by date, meaning you will see all the information, starting with the beginning of the project.

Note: You can attach documents to time entries when updating time sheets. You can review the documents then in the project section logged hours.