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Inventories (Tables)
 6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
Inventories by Major Classification
Inventories by major classification are as follows:
(Amounts in millions)
June 30,
2018
 
December 30,
2017
Finished goods
$
566.9

 
$
541.9

Work in progress
50.7

 
49.3

Raw materials
127.1

 
122.7

Total FIFO value
744.7

 
713.9

Excess of current cost over LIFO cost
(76.4
)
 
(75.1
)
Total inventories – net
$
668.3

 
$
638.8