Note 4 - Inventories - Schedule of Inventory (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Finished goods inventory at average cost	$ 757	$ 710
Less: Excess of weighted-average cost over LIFO cost (LIFO reserve)	(281)	(280)
Less: Other inventory reserves	(16)	(15)
Inventory, Net	460	415
Valves, Automation, Measurement and Instrumentation [Member]
Finished goods inventory at average cost	212	206
Carbon Steel Pipe, Fittings and Flanges [Member]
Finished goods inventory at average cost	147	135
Gas Products [Member]
Finished goods inventory at average cost	277	265
All Other Products [Member]
Finished goods inventory at average cost	$ 121	$ 104

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.

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