Note 12 - Pension and Postretirement Benefit Plans - Reconciliations of Changes in Benefit Obligations, Plan Assets and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Fair value at beginning of period	$ 850
Fair value at end of period	798	$ 850
UNITED STATES | Pension Plan [Member]
Obligation at beginning of period	810	772
Interest cost	13	21	$ 40
Actuarial (gain) loss	(29)	68
Benefit payments	(49)	(51)
Obligation at end of period	745	810	772
Fair value at beginning of period	781	724
Actual return on plan assets	1	107
Employer contributions		1
Benefit payments	(49)	(51)
Fair value at end of period	733	781	724
Funded status at end of period	(12)	(29)
UNITED STATES | Other Postretirement Benefits Plan [Member]
Obligation at beginning of period	4	3
Actuarial (gain) loss	(1)	1
Benefit payments
Obligation at end of period	3	4	3
Fair value at beginning of period	0	0
Fair value at end of period	0	0	0
Funded status at end of period	(3)	(4)
Foreign Plan [Member] | Pension Plan [Member]
Obligation at beginning of period	438	412
Interest cost	5	5	8
Service cost	9	9	8
Actuarial (gain) loss	(25)	10
Benefit payments	(15)	(13)
Settlements	(1)	(4)
Deconsolidation of subsidiary		(8)
Translation adjustments	(27)	27
Obligation at end of period	384	438	412
Fair value at beginning of period	69	78
Actual return on plan assets		3
Employer contributions	17	14
Benefit payments	(15)	(13)
Settlements	(1)	(4)
Deconsolidation of subsidiary		(8)
Translation adjustments	(5)	(1)
Fair value at end of period	65	69	78
Funded status at end of period	(319)	(369)
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Obligation at beginning of period	93	88
Interest cost	2	2	3
Service cost	1	1
Actuarial (gain) loss	(24)	4
Benefit payments	(4)	(4)
Translation adjustments	1	2
Obligation at end of period	69	93	88
Fair value at beginning of period	0	0
Employer contributions	5	4
Benefit payments	(4)	(4)
Fair value at end of period	1	0	$ 0
Funded status at end of period	$ (68)	$ (93)