Note 18 - Deferred Tax Assets and Liabilities Significant Components (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets
Pension and postretirement obligations	$ 39	$ 62
Restructuring programs	2	1
Leasing	1
Foreign tax credit	355	357
Inventories	8	10
Investment tax credit	46	48
Employee deferred compensation	24	23
Depreciation	41	64
Research and development costs	56	67
Tax loss carryforwards	325	338
Other deferred revenue	2	1
Other	86	67
Total deferred tax assets	985	1,038
Deferred tax liabilities
Leasing		2
Goodwill/intangibles	11	16
Unremitted foreign earnings	19	22
Total deferred tax liabilities	30	40
Net deferred tax assets before valuation allowance	955	998
Valuation allowance	821	853
Net deferred tax assets	$ 134	$ 145