Vodafone merged its India operations with billionaire Kumar Mangalam Birla's conglomerate but the combined entity Vodafone Idea Ltd is facing a USD 7.8 billion bill in past statutory dues. Tax authorities had in September 2007 served notice to Vodafone International Holdings BV (VIHBV) for its alleged failure to deduct withholding tax from consideration paid to the Hutchison Telecommunications International Ltd. Vodafone challenged this in the Supreme Court, which in January 2012 set it aside, saying the transaction was not taxable in India and so the company had no obligation to withhold tax. In May that year, Parliament passed the Finance Act 2012 that amended various provisions of the Income Tax Act 1961 with retrospective effect to tax any gain on transfer of shares in a non-Indian company which derives substantial value from underlying Indian assets. The company was in January 2013 served a tax notice of Rs 14,200 crore after including interest on the principal amount.