The emissions controlled fords (newer) seem to be MUCH more prone to the high idle issues.
My Focus routinely idles at 1500RPM (it's normal) and our F350 has never idled below 1500. My Taurus would idle at 2500RPM on cold start ... all are considered to be "normal"
2011 Focus SE 5 Speed 36k - Blue Flame Metallic - Added Rear Swaybar
2000 Jeep Cherokee Sport 115k - Lifted with mud tires.