When I redeem an airline credit voucher, what will the receipt look like?

I have a credit voucher for Delta and I’ll be using it to buy a ticket that costs more than the voucher. (Let’s say my voucher is for $500 and the ticket will cost $550 incl all taxes.) I will pay the remaining $50 with Visa.

When I do this,
– will I get a receipt that says $50?
– will I get a receipt that says $550 but specifies something like ”$500 paid by voucher and $50 paid by Visa”?
– or will I just get a receipt that says $550?