The Reserve Bank of India had decided to adopt XBRL standards in October 2008. Here is information about it and also link to original RBI Notice. It is not yet clear from website that whether it is adopted till now? The Reserve Bank of India will launch the Basel II reporting system using eXtensible Business Reporting Language (XBRL) through the existing Online Returns Filing System (ORFS) on October 6, 2008. Basel II Reporting System is the first reporting system based on XBRL. India is possibly the first among the developing countries to introduce XBRL standard in its reporting system. The system also makes use of latest technology tools, some of which are already built into its ORFS. RBI Notice Link