You should be getting the details to show on the pp_confirm page. The fact that you are not tells me that something else is wrong in this checkout server behavior. To help you get to the bottom of it I have opened a ticket for you on this issue. To check the status of the ticket or update it please login and visit your support history.
The type of checkout that you are working with is known as Express Checkout, this is different from Payments Standard and should allow you to complete the checkout on your site and get to a checkout success page that should act as a receipt.