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	6 Months Ended		12 Months Ended
		Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Asset impairment		$ 195		$ 195	$ 217
Total restructuring, impairment and other charges and credits		337		562
Cost of Sales [Member]
Asset impairment	[1]
Total restructuring, impairment and other charges and credits	[1]	98		259
Selling, General and Administrative Expenses [Member]
Asset impairment
Total restructuring, impairment and other charges and credits		22		70
Research, Development And Engineering Expenses [Member]
Asset impairment		195		195
Total restructuring, impairment and other charges and credits		212		225
Other Nonoperating Income (Expense) [Member]
Asset impairment
Total restructuring, impairment and other charges and credits		5		8
Employee Severance [Member]
Restructuring charges		58		135
Employee Severance [Member] | Cost of Sales [Member]
Restructuring charges	[1]	24		76
Employee Severance [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		18		31
Employee Severance [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges		16		28
Employee Severance [Member] | Other Nonoperating Income (Expense) [Member]
Restructuring charges
Capacity Realignment [Member]
Restructuring charges		60		149
Capacity Realignment [Member] | Cost of Sales [Member]
Restructuring charges	[1]	60		148
Capacity Realignment [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges
Capacity Realignment [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges				1
Capacity Realignment [Member] | Other Nonoperating Income (Expense) [Member]
Restructuring charges
Other Restructuring [Member]
Restructuring charges		24		83
Other Restructuring [Member] | Cost of Sales [Member]
Restructuring charges	[1]	14		35
Other Restructuring [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		4		39
Other Restructuring [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges		1		1
Other Restructuring [Member] | Other Nonoperating Income (Expense) [Member]
Restructuring charges		$ 5		$ 8

[1] Activity reflected in cost of sales.