Suntory Holdings Ltd. plans to borrow as much as $12 billion to finance the purchase of Beam Inc., two sources said.

Mitsubishi UFJ Financial Group Inc.'s lending unit has agreed to provide a bridge loan of $10 billion to $12 billion for the acquisition, the sources said, asking not to be identified because the information is private.

Suntory said Monday it agreed to buy Beam, the maker of Jim Beam and Canadian Club liquor, for $16 billion including debt. Moody's Investors Service on Tuesday put the Tokyo-based company's A3 credit rating on review for a downgrade, saying the deal is expected to add more than $10 billion to Suntory's debt.