You can launch the validation of the instance document in Review mode. Validation performs these operations:
Retrieves XBRL mappings from the Mapping Tool client tool.
Checks and validates the XBRL mappings against the metadata in the taxonomy.
Uses XBRL taxonomy schema rules and calculations to validate data accuracy and compliance.
Provides error messages from the Mapping Tool.
To validate the taxonomy in review mode, on the Review pane, click 
, and then from the drop down, select Validate.
Additionally, you can perform regulator specific validations including:
Validation based on the XBRL 2.1 specification (by default) for dimensions, linkbases, and the Unit Types Registry
Regulatory validation for US SEC Edgar Filing Manual, HMRC Joint Filing Checks and the IFRS Global Filing Manual
Extension modules, which are available for tuple generation, custom functions, etc.