Pros
Great pay and benefits. One of the few companies that still have a pension. It's 15% of your salary. You have to stay 3 years to be vested though. Great place to start if you're a grad wanting to get some experience or trying to break into the industry from a different one. Do your 2-3 years then move on to another company where you can have a bigger impact and pay. They have a strong safety culture.
Cons
The ability to impact change is non-existent unless you are one of the few key employees the leaders will listen to. They spout the desire for employees to bring forth ideas for change and improvements and even have programs in place to do so, but when you do, you get labeled as difficult and it will stall your career. Best to just keep your head down, do your work, and keep quiet. The openness of the business for flexible work is extremely limited. They decreased the ability for corporate staff functions at the sites to work from home from 2 to now only 1 day a week every other Friday. You do have the option to work a 9/80 or 4/10 schedule but expect them to be watching the clock to ensure you are physically in the office that entire time. If you're a single parent or have primary care obligations to your children, don't expect much flexibility in your work. The corporate culture is not one of trust and empowerment. There are many layers of approval to go through to get the simplest of things done. I've never worked for a company of this size and seen senior leaders have no ability to make decisions for their function without additional approvals. It really handicaps leaders. Many processes are not documented so it can be incredibly challenging. Most policies and processes are on SharePoint sites, but these are not updated regularly so it's highly likely you will find outdated policies and procedures on these sites when looking up things. It can take months to hire an employee due to the many layers of approval that are required to hire a candidate. DE&I is solely focused on visible diversity. There's no true desire for diversification of thought, backgrounds, experiences, etc.