XML 272 R233.htm IDEA: XBRL DOCUMENT v3.8.0.1

Subsequent events (Details Text) R$ in Thousands	Jan. 31, 2018 BRL (R$)
Subsequent Events Details Text [Abstract]
Credit assigned loans	R$ 5,323,120
Credit assigned loans - Whose sale value	R$ 110,189

X

- Definition

Credit assigned loans

+ References

No definition available.

+ Details

Name:	bbd_CreditAssignedLoans
Namespace Prefix:	bbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Credit assigned loans - Whose sale value

+ References

No definition available.

+ Details

Name:	bbd_CreditAssignedLoansWhoseSaleValue
Namespace Prefix:	bbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Subsequent events (Details Text)

+ References

No definition available.

+ Details

Name:	bbd_SubsequentEventsDetailsTextAbstract
Namespace Prefix:	bbd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration