15. INVENTORIES

A majority of inventory owned by Deere & Company and its U.S. equipment subsidiaries are valued at cost, on the “last-in, first-out” (LIFO) basis. Remaining inventories are generally valued at the lower of cost, on the “first-in, first-out” (FIFO) basis, or net realizable value. The value of gross inventories on the LIFO basis at November 1, 2020 and November 3, 2019 represented 52 percent and 55 percent, respectively, of worldwide gross inventories at FIFO value. The pretax favorable income effect from the liquidation of LIFO inventory during 2020 was $33 million. If all inventories had been valued on a FIFO basis, estimated inventories by major classification at November 1, 2020 and November 3, 2019 in millions of dollars would have been as follows:

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