Find a company's cash flow statement in either its 10-Q quarterly reports or in its 10-K annual reports. You can obtain these reports from the investor relations section of a company's website or from the U.S. Securities and Exchange Commission's EDGAR online database.
Find the "Cash Flows from Financing Activities" section, which is the last section of the cash flow statement.
Look for the line containing the description "Repayment on Debt," or "Payment of Loan Principal."
Identify the dollar amount, listed to the right of the description. A company encloses this amount in parentheses to show that the amount reduces its cash. For example, if a company's cash flow statement shows "Payment of Loan Principal ($5,000)," the company paid $5,000 toward the principal balance of its debt, which means it owes $5,000 less than it did before.