Note 3 - Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Non-amortizable intangible assets, gross	$ 763	$ 747
Trademarks and trade names	235	240
Non-amortizable intangible assets, accumulated impairment and amortization	(528)	(507)
Trademarks and Trade Names 1 [Member]
Non-amortizable intangible assets, gross	75	75
Trademarks and trade names	$ 75	75
Core Technology [Member]
Weighted average useful life (Year)	8 years
Finite-Lived Intangible Assets, Gross, Total	$ 143	133
Amortizable intangible assets, accumulated impairment and amortization	(99)	(94)
Amortizable intangible assets, net carrying amount	$ 44	39
Trademarks and Trade Names [Member]
Weighted average useful life (Year)	13 years
Finite-Lived Intangible Assets, Gross, Total	$ 30	30
Amortizable intangible assets, accumulated impairment and amortization	(8)	(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	$ 515	509
Amortizable intangible assets, accumulated impairment and amortization	(421)	(407)
Amortizable intangible assets, net carrying amount	$ 94	$ 102