Job security. Leadership looks for ways to utilize its talent. If there isn't a fit in one area, you have flexibility to move to another-more career options.
Big company so lots of opportunities to find a role that fits.
Cons
Salary is well below similar banks of its size.
Office politics and difficulty advancing unless you're friendly or have connections to senior leadership. You'll get more opportunities for promotion if you're tenured, not necessarily if you're more qualified.