XML 270 R231.htm IDEA: XBRL DOCUMENT v3.8.0.1

New standards and amendments and interpretations of existing standards (Details 1) R$ in Millions	12 Months Ended
	Dec. 31, 2018 BRL (R$)
Provision For Additional Estimated Credit Losses On January [Abstract]
Credit portfolio	R$ 3,829	[1]
Securities	842
Total gross additional provisions	R$ 4,671
[1] Includes commitments and financial guarantees provided

X

- Definition

Provision for additional estimated credit losses - Credit portfolio

+ References

No definition available.

+ Details

Name:	bbd_ProvisionForAdditionalEstimatedCreditLossesCreditPortfolio
Namespace Prefix:	bbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Provision for additional estimated credit losses on January 1, 2018

+ References

No definition available.

+ Details

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

X

- Definition

Provision for additional estimated credit losses - Securities

+ References

No definition available.

+ Details

Name:	bbd_ProvisionForAdditionalEstimatedCreditLossesSecurities
Namespace Prefix:	bbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Total gross additional provisions

+ References

No definition available.

+ Details

Name:	bbd_TotalGrossAdditionalProvisions
Namespace Prefix:	bbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration