Pros
Opportunities exist for self-starters. Don't wait for management or anyone else show your career path. If you go to work there, take time to learn how the company operates, really before starting out on your own career path. The extent to which you succeed will be largely based on your ability to see a need and fill it, while doing what is expected of you. The company is large, geographically dispersed and it's regions are led by very different people. In many ways, your success will depend on your location and the division. Definitely not a place to be nurtured.
Cons
Overall, the cons of this organization really depend on your division and your location. Being the right gender doesn't hurt either. The biggest con is the lack of management accountability.