Note 5 - Goodwill and Other Intangible Assets (Details) - Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Category - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 216	$ 215
Accumulated Amortization	58	33
Net	158	182
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	46	46
Net	$ 46	$ 46
Weighted-Average Amortization Period (in years)
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 131	$ 131
Accumulated Amortization	47	27
Net	$ 84	$ 104
Weighted-Average Amortization Period (in years)	6 years	7 years
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 37	$ 36
Accumulated Amortization	11	6
Net	$ 26	$ 30
Weighted-Average Amortization Period (in years)	7 years	8 years
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2	$ 2
Net	$ 2	$ 2
Weighted-Average Amortization Period (in years)	20 years	21 years