90 paid day notice in NY required by law and 60 days in other states like NJ/Maryland. Check your state laws on WARN ACT. During those 60-90 days, you get the same benefits as employees. You lose them right after. For the most part, you also get unused vacation day paid for most if not all states.
After the WARN act notice period, you get a lump sum of 2 weeks pay per year with Citi with minimum 8 weeks to 26 weeks max.
You get 1-4 months of Lee Harrison Hecht outplacement services. The months depends how senior you are. Senior executives may negotiate higher servanance / outplacement.