2006 Other Lincoln Models Poor handling in inclement weather

This car handles fine on dry or partially dry road surfaces. But on standing water or icy roads it handles like no car I have ever driven. Approaching an overpass that I know is icy, with my foot off of gas or brake, as soon as all of the tires are on the slick surface it immediately will move to one side requirig me to move the steering wheel back and forth 2 to 3 inches to keep it going straight. It handles the same way when there is a heavy rain.

Please advise if you know anything about this problem.