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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

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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