Note 6 - Goodwill and Other Intangible Assets - Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Category (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Intangible assets, accumulated amortization	$ 97	$ 92
Finite-lived intangible assets, net	11
Intangible assets, gross carrying amount	125	126
Intangible assets, net	28	34
Trade Names [Member]
Indefinite-lived intangible assets	17	18
Technology-Based Intangible Assets [Member]
Finite-lived intangible assets, gross carrying amount	99	99
Intangible assets, accumulated amortization	88	84
Finite-lived intangible assets, net	$ 11	$ 15
Intangible assets, weighted average remaining amortization period (Year)	3 years	4 years
Customer-Related Intangible Assets [Member]
Finite-lived intangible assets, gross carrying amount	$ 9	$ 9
Intangible assets, accumulated amortization	9	8
Finite-lived intangible assets, net	$ 0	$ 1
Intangible assets, weighted average remaining amortization period (Year)	1 year	2 years