Note 10 - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases	$ 21	$ 22	$ 25
Financing cash flow for finance leases	1	1	2
Cash paid for amounts included in measurement of lease liabilities	$ 22	$ 23	$ 27