Sometimes Great, But very much depends on your position
Pros
Accenture is a great big company, but still manages to feel small in some places (see cons as well). Community is a big focus area, and they do a reasonably good job of making you feel like you belong. Work arrangements are flexible, which many people very much appreciate, particularly those with children.
Cons
Accenture is a great big company, it can sometimes be challenging to get things accomplished, and nearly impossible to make any changes to process. This is perhaps to be expected, but can be very frustrating if you have ideas - this is a company best suited to people who like to be told how to do their jobs, and who will just do it as instructed without getting ideas about better ways to accomplish the same thing. The worst downside, though, is that - as a public company - there is always focus on the quarterly results - so long-term benefits are not examined at all. The business is run quarterly, anything outside that view is completely irrelevant.