Note 13 - Goodwill and Intangible Assets - Summary of Changes in Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill, gross	$ 2,742	$ 2,762	$ 2,748
Goodwill, acquired	(4)	(14)
Goodwill, dispositions	(16)
Accumulated goodwill impairment	(99)	(99)	(99)
Goodwill	2,643	2,663	$ 2,649
Goodwill, acquired	$ 4	$ 14