Walnut trees and red fescue do the same thing. I have killed many an indoor ivy houseplant. But more importantly, it depends upon the conditions you provide it. Under natural conditions, many ivy are understory plants, that is, they prefer conditions beneath a canopy of larger shrubs and trees. That means increased relative humidity and partial sunlight.
Most homes are too dry for good growth of ivy.
That's especially true in Montana, where we have low relative humidity to begin with. Add central heating to that, and you get static electricity and dead ivy. As a remedy, I suggest you invest in a room or central home humidifier to put some moisture into the air. Also, don't place the ivy in a south, southwest, southeast, or west-facing window. A third difficulty with growing some ivy in the home is mites.