ADITYA BIRLA GROUP is an Indian Multi-National Conglomerate headquartered in Worli,Mumbai India.It operates in 35 countries with more than 120,000 employees worldwide. The group was founded by Seth Shiv Narayan Birla in 1857. The group has interests in viscose metals, cement (largest in India), viscose filament yarn, branded apparel, carbon black, chemicals, fertilisers, insulators, financial services, telecom, BPO and IT services. It is the third-largest Indian private sector conglomerate behind TATA Group with revenue of just over US$100 billion and RIL with revenue of US$74 billion.
The Group's non-ferrous metals' business is under Hindalco Industries. Its manufacturing locations are primarily in India and it owns mines in Great Sandy Desert, Australia near Nifty Airport called Birla Nifty Copper Operation (Nifty Copper Mine). On 11 February 2007, the company entered into an agreement to acquire the Canadian company Novelis for US$6 billion,] making the combined entity the world's largest rolled-aluminium producer. On 15 May 2007, the acquisition was completed with Novelis shareholders receiving $44.93 per outstanding share of common stock. The Group plans to close a part of its aluminium foil making mill in UK and shift that to its plant near Nagpur.
Idea Cellular was started as a joint venture with the AT&T and the TATA Group. After an IPO on the Indian stock markets, Idea Cellular now accounts for a third of the group's market capitalisation. The company is headquartered in Mumbai. On 31 August 2018 Idea Cellular completed its merger with Vodafone India and thereby became largest telecom company in terms of subscribers and revenue, surpassing Airtel.