Aditya Birla Telecom, a wholly owned subsidiary of Idea Cellular, has scaled down its $640 million deal with US-based private equity major Providence Equity Partners. Idea Cellular has offloaded only 16.14 per cent stake (as against the earlier agreed 20 per cent) for around $428 million as the Foreign Investment Promotion Board (FIPB) gave only a partial approval. Idea Cellular had earlier stated that the funds would be used for network rollout and ongoing operations of Aditya Birla Telecom.