ESMA ESEF Taxonomy
You can get to the ESMA ESEF Taxonomy here. ESMA (European Securities and Markets Authority) uses the ESEF (European Single Electronic Format).
Someone created free tools to help if you will use the ESEF taxonomy.
Interestingly, the ESEF taxnoomy has labels in 23 different languages!
Also, these XBRL formulas are worth checking out.
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