Show the amount paid to insure shipment

I'm filing a claim for a lost package with USPS. They are requiring proof of the amount paid to insure the package. When I look at the order details page for that order, I can see the total cost and the insurance amount. The total cost is actually the base cost for the shipment, not including any extra paid for added insurance. I can mock up a dummy label to find the amount of the insurance, but that won't provide proof to file the claim. Could you please display package cost + insurance fee = total cost in the order details window for shipped orders?