XML 279 R227.htm IDEA: XBRL DOCUMENT v3.19.1
Risk and Capital Management - Summary of Off Balance Sheet (Detail) - BRL (R$)
R$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Disclosure of contractual maturities of assets and liabilities and off balance sheet commitments [line items]    
Financial guarantees R$ 66,105 R$ 70,489
Commitments to be released 272,843 244,126
Letters of credit to be released 10,747 9,214
Contractual commitments-Fixed assets and Intangible 678 1,165
Total 350,373 324,994
0-30 days [Member]    
Disclosure of contractual maturities of assets and liabilities and off balance sheet commitments [line items]    
Financial guarantees 1,305 1,749
Commitments to be released 110,909 98,310
Letters of credit to be released 10,747 9,214
Total 122,961 109,273
31 - 365 days [Member]    
Disclosure of contractual maturities of assets and liabilities and off balance sheet commitments [line items]    
Financial guarantees 17,314 17,563
Commitments to be released 25,977 27,857
Contractual commitments-Fixed assets and Intangible 405 432
Total 43,696 45,852
366 - 720 days [Member]    
Disclosure of contractual maturities of assets and liabilities and off balance sheet commitments [line items]    
Financial guarantees 5,509 5,451
Commitments to be released 5,796 7,307
Contractual commitments-Fixed assets and Intangible 273 460
Total 11,578 13,218
Over 720 days [Member]    
Disclosure of contractual maturities of assets and liabilities and off balance sheet commitments [line items]    
Financial guarantees 41,977 45,726
Commitments to be released 130,161 110,652
Contractual commitments-Fixed assets and Intangible   273
Total R$ 172,138 R$ 156,651