Mumbai: IDFC First Bank has raised $500 million through its maiden international bond issuance, marking its entry into the global debt capital markets and diversifying its funding base.The three-year fixed-rate senior notes, issued through the bank’s International Financial Services Centre Banking Unit at GIFT City, carry a coupon of 5.625% and mature in 2029. The bonds were offered to investors outside the United States under Regulation S, which allows offshore securities offerings without registration with the US Securities and Exchange Commission.The issuance follows S&P Global Ratings assigning IDFC First Bank a ‘BBB-’ long-term issuer credit rating with a stable outlook...