Hello there, @typicole. I'm here to help pull up a report on a Category Details of An Expense.

We can pull up the Transaction List by Vendor Report report to show the items you put on the Category section of the Expense transaction and then customize it with the details you want to display on that specific report.

Here's how:

1. Go to the Reports menu, search for Transaction List by Vendor, and click the report to open.
2. You may filter the date range if needed.
3. Select Customize.
4. Once done customizing your report, click Run Report to save changes.

For more details about filtering reports, refer to this article: Customize reports in QuickBooks Online. You can also memorize it to save its current customization settings.

If you want to export the reports and lists into individual Excel files, you can visit this article: Export reports, lists, and other data from QuickBooks Online.

Please don't hesitate to post a reply if you have any clarification on the process or if you have any other concerns. I'll be here for you. Have a pleasant day ahead!