Note 7 - Derivative Instruments, Effect of Derivative Contracts on Accumulated Other Comprehensive Income (Details) (Designated as Hedging Instrument [Member], Cash Flow Hedging [Member], Foreign Exchange Contract [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Effect of Derivative Contracts on Accumulated Other Comprehensive Income:
Accumulated OCI - Foreign exchange contracts designated as cash flow hedges, beginning of period	$ 72	$ 14
Amount of gain (loss) recognized in other comprehensive income (effective portion)	(36)	(43)
Amount of gain (loss) reclassified from accumulated other comprehensive income to income (effective portion)	23	1
Accumulated OCI - Foreign exchange contracts designated as cash flow hedges, end of period	$ 13	$ (30)