Note 4 - Inventories - Schedule of Inventory (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Finished goods inventory at average cost	$ 798	$ 710
Less: Excess of weighted-average cost over LIFO cost (LIFO reserve)	(291)	(280)
Less: Other inventory reserves	(17)	(15)
Inventory, Net	490	415
Valves, Automation, Measurement and Instrumentation [Member]
Finished goods inventory at average cost	221	206
Carbon Steel Pipe, Fittings and Flanges [Member]
Finished goods inventory at average cost	153	135
Gas Products [Member]
Finished goods inventory at average cost	281	265
All Other Products [Member]
Finished goods inventory at average cost	$ 143	$ 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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