Antitrust suits result in more varied options than just breaking a company up. Microsoft had to have certain aspects of it's operations supervised by the Department of Justice for years, and had to make mandatory changes with respect to browser bundling that only ended with Windows 10/11.

Intel has settled some antitrust actions -- namely lawsuits by AMD -- with money and cross-licensing agreements. They've spun off some divisions and operations over the years but none forced that I can recall.