Note 2 - Net Income per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:
Net income	$ 640	$ 692	$ 1,317	$ 1,262
Denominator:
Weighted average shares of common stock - basic	1,297	1,291	1,296	1,290
Dilutive effect of equity incentive plans	16	18	20	19
Weighted average shares of common stock - diluted	1,313	1,309	1,316	1,309
Net income per share:
Basic	$ 0.49	$ 0.54	$ 1.02	$ 0.98
Diluted	$ 0.49	$ 0.53	$ 1.00	$ 0.96
Common stock equivalents excluded from income per diluted share because their effect would have been anti-dilutive	7	8	5	12