Note 7 - Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ 62
Derivative Liability, Fair Value, Amount Offset Against Collateral	62
Other Current Assets [Member]
Fair Value of Derivative Contracts:
Derivative Asset, Fair Value, Gross Asset	100	55
Other Current Assets [Member] | Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative assets	27
Other Current Assets [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative Asset, Fair Value, Gross Asset	43	43
Other Current Assets [Member] | Not Designated as Hedging Instrument [Member] | Embedded Derivative Financial Instruments [Member]
Fair Value of Derivative Contracts:
Derivative Asset, Fair Value, Gross Asset	11	11
Other Current Assets [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative Asset, Fair Value, Gross Asset	46	1
Other Current Liabilities [Member]
Fair Value of Derivative Contracts:
Derivative Liability, Fair Value, Gross Liability	67	86
Other Current Liabilities [Member] | Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative Liabilities	5
Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative Liability, Fair Value, Gross Liability	52	30
Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Embedded Derivative Financial Instruments [Member]
Fair Value of Derivative Contracts:
Derivative Liability, Fair Value, Gross Liability	0	0
Other Current Liabilities [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value of Derivative Contracts:
Derivative Liability, Fair Value, Gross Liability	$ 15	$ 56