Right now some call details are hidden and you have to contact support to get full details of the call transactions.

The full report has all of these fields for each call:

Call Sid Account Sid Start Time End Time Duration From To Direction Trunk Sid Secure Trunking Called Via Status Api Version Price Price Unit STIR Status Type Date Created SIP Call ID CNAM Parent Call Sid Phone Number Sid

Also, jumping around from Reports | Call Reporting to Settings | Phone Numbers | Usage Summary (for detailed Agency info) makes it difficult to understand because the views of the data are completely different.