| R$ thousand | ||
| On December 31 | ||
| 2017 | 2016 | |
| Foreign exchange transactions (1)(4) | 17,279,327 | 17,455,821 |
| Debtors for guarantee deposits (2)(4) | 17,840,698 | 16,372,044 |
| Negotiation and intermediation of securities (4) | 1,741,524 | 1,954,484 |
| Trade and credit receivables (4) | 3,016,225 | 1,813,144 |
| Deferred acquisition cost (insurance) - Note 35f | 1,070,108 | 1,750,244 |
| Other debtors | 3,736,743 | 2,781,206 |
| Prepaid expenses | 1,244,602 | 1,324,362 |
| Income receivable (4) | 1,841,709 | 1,575,698 |
| Interbank and interdepartmental accounts | 1,480,291 | 949,730 |
| Other (3) | 1,602,760 | 1,193,637 |
| Total | 50,853,987 | 47,170,370 |
(1) Mainly refers to purchases in foreign currency made by the institution on behalf of customers and rights in the institution's domestic currency, resulting from exchange sale operations;
(2) Refers to deposits resulting from legal or contractual requirements, including guarantees provided in cash, such as those made for the filing of appeals in departments or courts and those made to guarantee services of any nature;
(3) Includes basically trade and credit receivables, material supplies, other advances and payments to be reimbursed; and
(4) Financial assets are recorded at amortized cost.