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Note 4 - Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Category (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Technology-Based Intangible Assets [Member] |  |
Gross Carrying Amount | $ 77 | $ 83
Accumulated Amortization | 38 | 38
Intangible Assets Net | $ 39 | $ 45
Weighted-Average Amortization Period | 3 years | 3 years
Customer-Related Intangible Assets [Member] |  |
Gross Carrying Amount | $ 30 | $ 37
Accumulated Amortization | 10 | 11
Intangible Assets Net | $ 20 | $ 26
Weighted-Average Amortization Period | 7 years | 7 years
Other Intangible Assets [Member] |  |
Gross Carrying Amount | $ 2 | $ 2
Accumulated Amortization |  |
Intangible Assets Net | $ 2 | $ 2
Weighted-Average Amortization Period | 21 years | 21 years
Trade Names [Member] |  |
Gross Carrying Amount | $ 40 | $ 46
Gross Carrying Amount | 149 | 168
Accumulated Amortization | 48 | 49
Intangible Assets Net | $ 101 | $ 119

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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X
- 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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X
- 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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X
- 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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X
- 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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