Forty-five countries gave US$ 25.1 billion in `` aid for the world 's poorest countries '' , aid that goes to the World Bank International Development Association ( IDA ) which distributes the money to eighty poorer countries . Forty-five countries pledged US$ 25.1 billion in `` aid for the world 's poorest countries '' , aid that goes to the World Bank International Development Association ( IDA ) which distributes the gifts to eighty poorer countries .