Note 1 - Description of Business and Summary of Significant Accounting Policies - Allowance for Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Beginning balance	$ 16	$ 10
Allowance obtained through acquisition	0	3
Provision for credit losses	1	4	$ 2
Amounts written off	(1)	(1)
Ending balance	$ 16	$ 16	$ 10