Thanks for getting in touch! So, the response when calling the transactions endpoint would differ from payment gateway to payment gateway as the responses are structured differently dependent on payment gateway - for example, Sellerdetails I believe to be used for Paypal transactions only.
Calling transactions.json for a Stripe transaction should give you a wealth of related transactional information in the receipt object - there is alot of useful information in the payment_method_details hash nested within the charges object. Hope that helps!