Pros
Comparatively relaxed demands on workers so long as your projects get done. Business unit heads have fair amount of freedom. Company is very visible and looks good on a resume. Pay is near-market, and merit increases are fairly reliable.
Cons
CSC is hemorrhaging money left and right and has been doing so since at least the 80s. Overpaid upper management can't stem the loss, so bonuses for sub-executives are gone, benefits are slashed, and the bench system- where if your business unit closes then you are put on retainer until a new opening appears- is gone. When I started 3 years ago, I could afford the PPO for my whole family, now I can barely manage the HDCP. The company is so large that management has their heads in the clouds about all this- employees drop or get laid off left and right and whole contracts are left to rot, while the CEO and national management hold lavish meetings and huge all-hands conferences to tell us how great everything is. How great is it? So great that the company just split in a desperate attempt to separate the reliable but low-earning public contracts from the bigger, riskier private ones. CSC is a textbook example of a company that had it all then lost it due to bad management, and it has suffered as a workplace for it.