Note 9 - Revenue 1 (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Contract with Customer, Liability	$ 98		$ 98		$ 92
Contract with Customer, Liability, Revenue Recognized	8	$ 5	23	$ 25
Contract with Customer, Cash Payments Received for Liabilities That Have Been Deferred	25	$ 20	29	$ 25
Revenue, Remaining Performance Obligation, Amount	89		89
Other Current Assets [Member]
Contract with Customer, Asset, after Allowance for Credit Loss, Current	1		1		5
Other Current Liabilities [Member]
Contract with Customer, Liability	44		44		35
Other Noncurrent Liabilities [Member]
Contract with Customer, Liability	$ 54		$ 54		$ 57