ONEOK, Inc. announced it has completed its previously announced underwritten public offering of $1.25 billion in different notes. The offering included the $1.25 billion of 4.250% notes due 2027, another $600 million in 4.400% notes due 2029, $1.25 billion in 4.750% notes due 2031, $1.60 billion of 5.050% notes due 2023, $1.50 billion …