Accounting policies and method of measurement (Tables)

12 Months Ended

Dec. 31, 2017

Accounting policies and method of measurement (Tables) [Abstract]

Financial assets and liabilities subject to ofsetting

The following table provides details of financial assets and liabilities subject to offsetting at December 31, 2017, 2016 and 2015:

Thousand of reais					2017
	Financial assets, gross		Financial assets offset in the balance sheet, gross	Financial assets offset in the balance sheet, net
Assets:
Derivatives		17,262,888	-	17,262,888
Repurchase agreements		34,505,671	-	34,505,671
	Financial liabilities, gross		Financial liabilities offset in the balance sheet, gross	Financial liabilities offset in the balance sheet, net
Liabilities:
Derivatives		16,677,486	-	16,677,486
Repurchase agreements		97,421,579	-	97,421,579
Thousand of reais					2016
	Financial assets, gross		Financial assets offset in the balance sheet, gross	Financial assets offset in the balance sheet, net
Assets:
Derivatives	24,702,973		-	24,702,973
Repurchase agreements	47,528,393		-	47,528,393
	Financial liabilities, gross		Financial liabilities offset in the balance sheet, gross	Financial liabilities offset in the balance sheet, net
Liabilities:
Derivatives	20,236,615		-	20,236,615
Repurchase agreements	129,817,727		-	129,817,727
Thousand of reais					2015
	Financial assets, gross		Financial assets offset in the balance sheet, gross	Financial assets offset in the balance sheet, net
Assets:
Derivatives	26,250,362		-	26,250,362
Repurchase agreements	31,987,323		-	31,987,323
	Financial liabilities, gross		Financial liabilities offset in the balance sheet, gross	Financial liabilities offset in the balance sheet, net
Liabilities:
Derivatives	24,716,959		-	24,716,959
Repurchase agreements	115,003,783		-	115,003,783

Tangible asset depreciation charge

The tangible asset depreciation charge is recognized in the consolidated income statement and is calculated basically using the following depreciation rates (based on the average years of estimated useful life of the various assets):

		Annual Rate
Buildings for own use		4%
Furniture		10%
Fixtures		10%
Office and IT equipment		20%
Leasehold improvements	10% or up to contractual maturity