XML 233 R194.htm IDEA: XBRL DOCUMENT v3.8.0.1
Subordinated debt (Details 2) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Net Movement Of Subordinated Debt [Abstract]    
Initial balances R$ 52,611,064 R$ 50,282,936
Balance originating from an acquired institution 0 1,401,348
Issuances 6,594,610 3,787,207
Interest 5,100,017 6,298,555
Payments and other (14,126,290) (9,158,982)
At the end of the year R$ 50,179,401 R$ 52,611,064