Note 11 - Employee Retirement Plans - Change in Fair Value of Level 3 Assets for Defined Benefit Plan (Details) - Pension Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Foreign Plan [Member]
Balance	$ 381	$ 584
Balance	405	381
Collateralized Mortgage-Backed Securities [Member] | Foreign Plan [Member]
Balance	42
Balance	43	42
Insurance Contracts [Member] | Foreign Plan [Member]
Balance	192
Balance	195	192
Other [Member] | Foreign Plan [Member]
Balance	12
Fair Value, Inputs, Level 3 [Member] | Foreign Plan [Member]
Balance	245
Balance	250	245
Fair Value, Inputs, Level 3 [Member] | Private Equity Funds [Member]
Balance	24	41
Actual return on plan assets relating to assets still held at the reporting date	(12)	(8)
Asset (sales) purchases	(12)	(9)
Balance		24
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Real Estate [Member]
Balance	7	10
Asset (sales) purchases	(4)	(3)
Balance	3	7
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage-Backed Securities [Member] | Foreign Plan [Member]
Balance	42	22
Actual return on plan assets relating to assets still held at the reporting date	1	1
Actual return on plan assets relating to assets sold during the reporting period		1
Asset (sales) purchases		18
Balance	43	42
Fair Value, Inputs, Level 3 [Member] | Insurance Contracts [Member] | Foreign Plan [Member]
Balance	192	2
Asset (sales) purchases	3	190
Balance	195	192
Fair Value, Inputs, Level 3 [Member] | Other [Member] | Foreign Plan [Member]
Balance	11
Asset (sales) purchases	1	11
Balance	$ 12	$ 11