Okay kiddo, so when your mommy or daddy makes a phone call, a special kind of information is generated. This information is called a "call detail record". It's like a record book that tells you lots of things about the phone call, just like how a diary tells you about all the things you did in a day.
This information includes the phone number that was called or received the call, the time when the call was made, how long the call lasted, and whether it was a voice call, a text message, or something else. It's like a list of all the important things that happened during the phone call.
Call detail records are important because they help phone companies keep track of all the calls that were made and received through their networks. They can also be used by the police and other authorities to investigate crimes or other suspicious activities.
So, call detail records are like a special book that tells you all the important things that happened during a phone call in a way that helps keep track of them and make sure everything is okay.