Note 17 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Net operating loss carryforwards	$ 218	$ 181
Postretirement benefits, including pensions	65	49
Research and development costs	238	208
Expense accruals	65	49
Other tax credits recoverable	217	241
Deferred Tax Assets, Capital Loss Carryforwards	53	51
Inventory reserves	37	32
Postemployment and other benefits	5	4
Intangibles	56
Leasing activities	77	69
Other	75	71
Total	1,106	955
Valuation allowances	(550)	(512)
Deferred tax assets	556	443
Unremitted earnings	(16)	(9)
Intangibles		(1)
Depreciation	(58)	(66)
Deferred tax liabilities	(74)	(76)
Net deferred tax assets	$ 482	$ 367