TOKYO, July 21 (Reuters) - Wal-Mart Stores Inc (WMT.N), the world's biggest retailer, plans to sell five-year Samurai bonds, documents filed with Japanese financial authorities showed on Tuesday 21 July.

The bonds are expected to come in two tranches -- fixed-rate and floating-rate, the documents showed.

BNP Paribas Securities, Mitsubishi UFJ Securities and Mizuho Securities are lead managers.

Market sources said Wal-Mart is seen offering the bonds in late July.

Samurai bonds are yen bonds issued in Japan by non-Japanese entities.

(Reporting by Rika Otsuka)