Durham,NC-Based Health Care Co IQVIA Holdings Received an Income Tax Benefit of $977 Mil in the 4Q 2017 From the Puzzling, Very Lucrative US Federal Income Tax Debt Forgiveness Feature in the US Trump Tax Cuts Act ....................................................................................... This $977 Mil Income Tax Benefit Comprised 90% of Its 4Q 2017 Total Net Income of $1.084 Bil