Airtel's consolidated debt stood at Rs 91,480 crore as on September 2017.
Post the transaction, Bharti Airtel and its wholly-owned subsidiaries together have an equity holding of 53.51 per cent in tower company Bharti Infratel, it added.
The sale was carried out by Airtel via its wholly-owned subsidiary, Nettle Infrastructure Investments.
Announcing the "successful divestment" of 83 million shares of subsidiary Bharti Infratel, the company said: "The sale was for a total consideration of over Rs 3,325 crore ($510 million) and was executed at a price of Rs 400.6 per share, representing a discount of 3.6 per cent to the previous day's closing price."
The allocation was done to global investors, fund managers and long-only funds, including many repeat investors, it said, adding that the deal was upsized by over 25 per cent.
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