XML 40 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Document and Entity Information [Abstract]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2017
Document Fiscal Year Focus 2017
Document Fiscal Period Focus FY
Entity Registrant Name BANK BRADESCO
Entity Central Index Key 0001160330
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Common shares  
Document and Entity Information [Abstract]  
Entity Common Stock, Shares Outstanding 3,049,448,563
Preferred shares  
Document and Entity Information [Abstract]  
Entity Common Stock, Shares Outstanding 3,035,625,047