Citigroup has crafted so-called work streams around improving its risk and controls as well as data and compliance, with plans to next month deliver an initial analysis of the efforts required to resolve regulators' issues. In May, it will present a more detailed implementation plan. "We also have work streams on creating a culture of excellence and accountability, and on strengthening all critical business processes," Jane Fraser, who takes over as CEO next month, said on a conference call with investors and analysts last week.