Note 9 - Leases - Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating lease expense	$ 17	$ 16	$ 18
Short-term lease expense	5	5	5
Total lease expense	$ 22	$ 21	$ 23