Note 3 - Inventories - Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Finished goods inventory at average cost	$ 741	$ 685
Less: Excess of average cost over LIFO cost (LIFO reserve)	(219)	(213)
Less: Other inventory reserves	(22)	(19)
Inventory, Net, Total	500	453
Valves, Automation, Measurement and Instrumentation [Member]
Finished goods inventory at average cost	242	240
Carbon Steel Pipe, Fittings and Flanges [Member]
Finished goods inventory at average cost	167	151
Gas Products [Member]
Finished goods inventory at average cost	201	184
All Other Products [Member]
Finished goods inventory at average cost	$ 131	$ 110

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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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.

+ References

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Amount of valuation reserve for inventory.

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