DETROIT—General Motors said Monday that it will cut 15 percent of its salaried workforce, estimated to be around 14,700 people in North America, and that it will idle factories in Michigan, Ohio, Maryland and Canada. GM says it will "unallocate" multiple North American plants in 2019, which basically means those facilities will not be asked to make product. It's the first procedural step toward outright closure, which cannot happen before a negotiated labor union agreement.

The affected plants are:
•Oshawa Assembly in Oshawa, Ontario, Canada;
•Detroit-Hamtramck Assembly in Detroit;
•Lordstown Assembly in Warren, OH;
•Baltimore Operations in White Marsh, MD; and
•Warren Transmission Operations in Warren, MI.

The automaker also said it will close two other manufacturing facilities outside North America, in addition to a previously announced shuttering of an assembly plant in Gunsan, South Korea. It anticipates the restructuring will cost between $3 billion and $3.8 billion, with the layoffs including 25 percent of GM's executive staff. In addition, future product development will focus on electric-powered crossovers, trucks and SUVs, with sedans and gas-powered cars being de-emphasized.