“Bank of Spain – XBRL Formulae for COREP and FINREP”

Víctor Morilla (Banco de España)Eindhoven May 5-8, 2008

Defining transformation rules to produce new facts from existing ones

Verifying data reported according to validation rules◦ Value assertions

◦ Existence assertions

◦ Consistency assertions

Documenting those rules Features:

◦ Business oriented

◦ Maintainable

◦ Extensible

The new Formulae specification

Own funds > Credit Risk Cap.Req + Market Risk Cap.Req

$of > $crcr + $mrcr

Concept filter = corep:OwnFunds

Concept filter = corep:CreditRiskCapitalRequirements

Concept filter = corep:MarketRiskCapitalRequirements

Validation example

$total <= sum($byCountry)

countrytotal IncomesIncomes

Dimension Country•Total

•France•Spain•…

Concept filter = IncomesExpensesProfitProfit before taxes

Dimension filter : Country = Total

Dimension filter : Country = child(Total)

Dimensional validation example

Advantages Powerful but simple model to express

business rules Higher quality of data Shorter time to elaborate and debug

information◦ Cost reduction for both the authority and the

regulated entity

But… The development of common formulae

linkbases exposes some lack of homogenization among supervisors

◦ Precision of the required data