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Note 12 - Debt (Details) ¥ in Billions | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2015 USD ($) | Dec. 31, 2013 USD ($) | Jun. 30, 2013 USD ($) | Mar. 31, 2013 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2014 USD ($) | Sep. 30, 2014 USD ($) | Mar. 31, 2013 CNY (¥)
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt, Weighted Average Interest Rate |  |  |  |  | 7.00% |  | 2.50% |  |
Debt Instrument, Fair Value Disclosure |  |  |  |  | $ 4,100,000,000 |  | $ 3,600,000,000 |  |
Proceeds from Issuance of Unsecured Debt |  |  |  |  | 745,000,000 | $ 248,000,000 |  |  |
Capital Lease Obligations Incurred |  | $ 230,000,000 |  |  |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Unsecured Debt | $ 745,000,000 |  |  |  |  |  |  |  |
Amended Credit Facility [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 1,000,000,000 |  |  |  | $ 2,000,000,000 |
Long-term Line of Credit |  |  |  |  | $ 0 |  |  |  |
Foreign Line of Credit [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | ¥ |  |  |  |  |  |  |  |  | ¥ 4
Repayments of Lines of Credit |  |  |  | $ 500,000,000 |  |  |  |  |
Commercial Paper [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 1,000,000,000 |  |  |  |  |  |
Commercial Paper [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt, Weighted Average Interest Rate |  |  |  |  | 0.60% |  |  |  |
Debentures 1.5%, Due 2018 [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 1.50% |  |  |  |
Debentures 1.5%, Due 2018 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 375,000,000 |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.50% |  |  |  |  |  |  |  |
Debentures 2.9%, Due 2022 [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 2.90% |  |  |  |
Debentures 2.9%, Due 2022 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 375,000,000 |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.90% |  |  |  |  |  |  |  |
Debentures, 3.70%, due 2023 [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 3.70% |  | 3.70% |  |
Debentures, 3.70%, due 2023 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 250,000,000 |  |  |  | $ 250,000,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.70% |  |  |  | 3.70% |  |  |
Proceeds from Issuance of Long-term Debt and Capital Securities, Net |  | $ 248,000,000 |  |  |  |  |  |  |
Maximum [Member] | Commercial Paper [Member] |  |  |  |  |  |  |  |  |
Note 12 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Term |  |  | 390 days |  |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition The cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes proceeds from (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 + Details
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