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Inventories
9 Months Ended
Aug. 31, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories are stated at lower of cost or net realizable value. U.S. inventories are valued using the last-in, first-out (“LIFO”) method and represented approximately $48.2 million, or 47.9%, and $47.6 million, or 45.9%, of gross inventories at August 31, 2019 and November 30, 2018, respectively. The remaining portion of inventories, which are located outside of the U.S., are valued using the first-in, first-out (“FIFO”) or an average cost method. Interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs and are subject to final year-end LIFO inventory valuations. Inventory costs include material, labor, and overhead. Inventories, net, consisted of the following:
 
August 31, 2019
 
November 30, 2018
 
(Dollars in millions)
Raw materials and supplies
$
35.3

 
$
35.0

Work-in-process
5.2

 
5.3

Finished goods
60.1

 
63.5

Inventories, gross
100.6

 
103.8

LIFO reserve
(15.4
)
 
(18.1
)
Obsolescence reserve
(6.6
)
 
(6.9
)
Inventories, net
$
78.6

 
$
78.8