Note 5 - Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Category (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]
Accumulated Amortization	$ 59	$ 49
Intangible Assets Net	44
Intangible assets gross	143	168
Intangible assets net	84	119
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	40	46
Technology-Based Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	75	83
Accumulated Amortization	47	38
Intangible Assets Net	$ 28	$ 45
Weighted-Average Amortization Period	2 years	3 years
Customer-Related Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26	$ 37
Accumulated Amortization	12	11
Intangible Assets Net	$ 14	$ 26
Weighted-Average Amortization Period	6 years	7 years
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2	$ 2
Intangible Assets Net	$ 2	$ 2
Weighted-Average Amortization Period	22 years	21 years