Pros
Benefits: generous vacation, 401k matching, work from home (more of a directive since dedicated desks were removed in favor of hotly sought-after hoteling space). Generally nice people, but as in all large corporations, there are bad apples that make coming to work a drag (somehow those folks are propped up and lauded by leadership).
Cons
Salary increase and internal transfers are rare. In my two years there, I didn't sense much meritocracy if at all. Highly political, and senior leaders have egos that get in the way of showing respect to employees. The project you're working on will probably not get implemented. This ends up being a waste of funds and resources for the company. Highly paranoid culture; many of my colleagues were secretly praying to get laid off since the severance benefits are generous.