Estimate the market value of debt outstanding in the company (see cost of capital section below), compute a market debt-to-equity ratio for the entire Walomart company, and use that ratio to compute a levered beta for Walmart.

If you can allocate the debt across the different businesses, compute the debt-to-equity ratio and levered beta for each business. (If not, use the companys debt-to-equity ratio for all of the businesses). If you are working with a privately owned, make a judgment on whether you want to use industry-average debt-to-equity or owner-specified target debt-to-equity ratio in computing the levered beta.

You can find it yourself on the company website. Thanks