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Note 15 - Hedging Activities (Details) - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
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Derivatives designated as hedging instruments |  |
Notional amount | $ 14,399 | $ 15,198
Asset derivatives, fair value | 995 | 1,535
Liability derivatives, fair value | (143) | (59)
Designated as Hedging Instrument [Member] |  |
Derivatives designated as hedging instruments |  |
Asset derivatives, fair value | 1 |
Liability derivatives, fair value | (23) |
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |
Derivatives designated as hedging instruments |  |
Notional amount | 782 | 487
Asset derivatives, fair value | 5 | 22
Liability derivatives, fair value | (10) | (6)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] |  |
Derivatives designated as hedging instruments |  |
Notional amount | 550 | 1,300
Asset derivatives, fair value |  | 1
Liability derivatives, fair value | (4) | (15)
Not Designated as Hedging Instrument [Member] |  |
Derivatives designated as hedging instruments |  |
Asset derivatives, fair value | 472 | 846
Liability derivatives, fair value | (61) |
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |
Derivatives designated as hedging instruments |  |
Notional amount | 1,095 | 1,285
Asset derivatives, fair value | 6 | 17
Liability derivatives, fair value | (12) | (5)
Not Designated as Hedging Instrument [Member] | Translated Earnings Contracts [Member] |  |
Derivatives designated as hedging instruments |  |
Notional amount | 11,972 | 12,126
Asset derivatives, fair value | 511 | 649
Liability derivatives, fair value | $ (33) | $ (33)

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719 + Details
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