A "detailed log" refers to a record or account that contains thorough and specific information about a particular event, activity, or process. It provides a complete and comprehensive description or chronology of what occurred. Full definition
Drivers must keep detailed logs of their hours of service to demonstrate compliance. (mcarthurlawfirm.com)
Android phone owners discovered that the social network had been keeping detailed logs of their phone calls and texts, in some cases for years. (theweek.com)
¥ Prepared and maintained detailed logs of all service activities. (livecareer.com)