The Journal report lists every transaction in a period you choose, and can be narrowed down to a single general ledger account.
Go to the report
Go to Reports > Journal Report.
Filter by account
Use the Account filter pill to choose a single ledger account. The report then shows only the transactions that touched that account, with both sides of each entry, so you can review everything that hit it alongside its offsetting entries. Leave the filter blank to see every account.
Other filters
Date range, Owners, and Tags are also available as filter pills at the top of the report.
Export
The CSV export carries the ledger account number for each entry and each document's own reference number (such as a check or invoice number).
Good to know
Selecting an account shows every transaction group that touched it, so a split posting's other lines still appear even if they hit a different account.