Best Buy has cut about 400 jobs at its Richfield, Minn., headquarters, a spokesman said Tuesday. The move is part of a larger restructuring at the world's largest consumer electronics chain under new Chief Executive Officer Hubert Joly, who told investors in November he aimed to cut $725 million in costs over time. The retailer, which currently employs about 8,000 people in Minnesota, expects to save about $150 million from the headcount reduction and other cuts in selling, general and administrative costs, spokesman Matt Furman said. Most of these savings come from non-salary expenses. Best Buy will report its fourth-quarter results on Thursday and shed more light on its cost cuts. The move did not affect any of its "Blue Shirt" sales associates, the company said.