Kroger Co. announced a major restructuring.

Under the plan, the Cincinnati-based company, one of the nation’s largest retail food chains, said it will dispose of 100 food stores, cut headquarters costs by 25%, divest part if not all of its drugstore group and sell some food manufacturing plants. The after-tax cost of the restructuring is expected to total between $75 million and $95 million, exclusive of any gain on the sale of the stores.