Detailed year purchases and average time taken to pay report

A customer of ours who works in the manufacturing industry needed their total purchases for a year or the average time it took to pay an invoice the Time Taken To Pay Purchase Invoices gives information and invoice details, but no real detail on what paid it and when, just the bare minimum, It would be useful maybe for a Excel report to be created that had this information in, where people could slice and pivot the data and structure the results to suit their needs.