Note 3 - Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Amortizable intangible assets, accumulated impairment and amortization	$ (543)	$ (507)
Intangible Assets, Gross (Excluding Goodwill), Total	779	747
Intangible Assets, Net (Excluding Goodwill), Total	236	240
Trademarks and Trade Names 1 [Member]
Indefinite Lived Intangible Assets, Excluding Goodwill, Gross	77	75
Indefinite-lived Intangible Assets (Excluding Goodwill), Ending Balance	$ 77	75
Core Technology [Member]
Weighted average useful life (Year)	8 years
Finite-Lived Intangible Assets, Gross, Total	$ 146	133
Amortizable intangible assets, accumulated impairment and amortization	(103)	(94)
Amortizable intangible assets, net carrying amount	$ 43	39
Trademarks and Trade Names [Member]
Weighted average useful life (Year)	13 years
Finite-Lived Intangible Assets, Gross, Total	$ 31	30
Amortizable intangible assets, accumulated impairment and amortization	(9)	(6)
Amortizable intangible assets, net carrying amount	$ 22	24
Customer Relationships [Member]
Weighted average useful life (Year)	8 years
Finite-Lived Intangible Assets, Gross, Total	$ 525	509
Amortizable intangible assets, accumulated impairment and amortization	(431)	(407)
Amortizable intangible assets, net carrying amount	$ 94	$ 102