Can be good if you can take the big company culture
Pros
It's great to know the products can really help people, and the company is pretty serious about being ethical. R&D projects are varied and interesting. Some really excellent people to work with. A respectful and pleasant work environment with good benefits.
Cons
Big, very risk-averse company with a paralyzing massive political bureaucracy. There is a desire to be innovative, but the culture does not really support innovation. Every project requires a huge amount of internal stakeholder input, and the naysayers often have the most power. Hard to be brave when everyone is always out for your budget. Increasingly there is a push to centralize/standardize support functions, which pushes more administrative work onto associates. Can be very hard to really be productive with the massive organizational overhead.