Note 9 - Pension and Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Credit) and Other Amounts Recognized in OCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Other Postretirement Benefits Plan [Member]
Interest cost	$ 0	$ 1
Expected return on plan assets
Service cost
Amortization of net actuarial loss (gain)	(1)	(1)
Net periodic benefit cost (credit)	(1)	0
UNITED STATES | Pension Plan [Member]
Interest cost	4	5
Expected return on plan assets	(5)	(6)
Amortization of net actuarial loss (gain)	1	1
Net periodic benefit cost (credit)	0	0
Foreign Plan [Member] | Pension Plan [Member]
Interest cost	3	2
Expected return on plan assets	(1)
Service cost	1	1
Amortization of net actuarial loss (gain)
Net periodic benefit cost (credit)	$ 3	$ 3