Note 2 - Restructuring, Impairment and Other Charges and Credits - Restructuring, Impairment and Other Charges and Credits Reflected on Consolidated Statement of Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 30, 2020	Sep. 30, 2020
Asset impairment		$ 22	$ 217
Total restructuring, impairment and other charges and credits		171	733
Cost of Sales [Member]
Total restructuring, impairment and other charges and credits	[1]	124	383
Selling, General and Administrative Expenses [Member]
Asset impairment		6	6
Total restructuring, impairment and other charges and credits		21	91
Research, Development And Engineering Expenses [Member]
Asset impairment		16	211
Total restructuring, impairment and other charges and credits		18	243
Other Nonoperating Income (Expense) [Member]
Total restructuring, impairment and other charges and credits		8	16
Employee Severance [Member]
Restructuring charges		6	141
Employee Severance [Member] | Cost of Sales [Member]
Restructuring charges	[1]	3	79
Employee Severance [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		3	34
Employee Severance [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges			28
Capacity Realignment [Member]
Restructuring charges		96	245
Capacity Realignment [Member] | Cost of Sales [Member]
Restructuring charges	[1]	95	243
Capacity Realignment [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges		1	2
Other Restructuring [Member]
Restructuring charges		47	130
Other Restructuring [Member] | Cost of Sales [Member]
Restructuring charges	[1]	26	61
Other Restructuring [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		12	51
Other Restructuring [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges		1	2
Other Restructuring [Member] | Other Nonoperating Income (Expense) [Member]
Restructuring charges		$ 8	$ 16

[1] Activity reflected in cost of sales.