[mjcl]

The answer depends on the vendor and your bank. Beyond the basic vendor, amount and description, some vendors transmit additional details like tax breakdown, travel class and line-item data. I found a PDF from Wells Fargo[1] that details some of the information that's transmitted.

On the bank side, I've seen the Level 2/3 information exposed to users of a purchasing cards (read: company credit cards). On the monthly statements we'd see line-item details for some vendors, like Best Buy. Travel purchases included flight segment details, cabin class, etc.

[1] https://www08.wellsfargomedia.com/assets/pdf/small-business/...