We examine the relationship between earnings management and nonfinancial information in corporate social responsibility disclosures (CSR information) that reveal firms' impacts on the environment and their relationships with stakeholders using firm-level data from 66 countries over the 2006-2023 period. We use breadth and quantity of CSR information to quantify CSR information transparency. We find that CSR information transparency is negatively associated with earnings management for firms covered by at least one security analyst; but it is unrelated to earnings management for firms with no analyst coverage. These results suggest that CSR information reinforces analysts' role in constraining managerial discretion in financial reporting. Cross-sectional evidence shows that the documented reinforcement effect is evident in all subsamples defined by country-level institutions and culture. It is especially prominent in countries with higher financial development or lower stakeholder orientation. However, it does not vary significantly with individualism or uncertainty avoidance. Our findings have broad, important implications in understanding how nonfinancial information facilitates the functioning of capital markets. Specifically, they contribute to a better understanding of how CSR information improves the monitoring of managerial discretion in financial reporting by security analysts.