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Inventories (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Inventories
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
Inventories	1,420.4	1,645.7
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)

X

- Definition

Represents the amount of LIFO inventory cost on FIFO method.

+ References

No definition available.

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- Definition

The effect of liquidating LIFO (last in first out) inventory layers on income.

+ References

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- Definition

The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

+ References

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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- Definition

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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