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Inventories (Tables)

12 Months Ended

Dec. 31, 2020

Inventories

Schedule of inventories

​

​	​	​	​	​	​
​	December 31,		​	December 31,
​	2020			2019
​	(in millions)
LIFO inventories - cost on FIFO method	$	1,226.0	​	$	1,387.7
Cost on FIFO method higher than LIFO value	​	(115.6)	​	​	(137.6)
Inventories - stated on LIFO method	​	1,110.4	​	​	1,250.1
Inventories - stated on FIFO method	​	310.0	​	​	395.6
​	$	1,420.4	​	$	1,645.7

Schedule of changes in the LIFO valuation reserve and impact of LIFO liquidations

​

​	​	​	​	​	​	​	​	​
​	Year Ended December 31,
​	2020		​	2019		​	2018
​	(in millions)
LIFO inventory valuation reserve adjustment (income) charge	$	(22.0)	​	$	(156.0)	​	$	271.8
Liquidation of LIFO inventory quantities that decreased cost of sales	​	(4.4)	​	​	(11.6)	​	​	**

** Insignificant liquidations of LIFO inventory quantities.

​

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The tabular disclosure of the LIFO valuation reserve and impact of LIFO liquidations.

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Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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