Pros
Tyco has a history of executing some of the most complex business transactions so it gives you the opportunity to learn in a real world environment. During my time with the company I have executed two spinoffs, shared service creation in US and LATAM as part of finance transformation, two headquarter moves (Bermuda to Switzerland to no Ireland) and now an inversion merger.
Cons
Due to the fast pace at Tyco often the details of executing management vision falls through the cracks; this is especially the case in the HR function so often you are on your own in navigating bad managers and career progression decisions. I do not view this as a major con but it may be a deal breaker for some so I am mentioning it. At Tyco you definitely have to be a self-starter who can manage your own career with little structured help or processes similar to companies like Johnson & Johnson or GE.