Note 2 - Net Income per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Numerator:
Net income	$ 570	$ 476
Denominator:
Weighted average common shares - basic	1,288	1,297
Dilutive effect of equity incentive plans	20	23
Weighted average common shares - diluted	1,308	1,320
Net income per share:
Basic	$ 0.44	$ 0.37
Diluted	$ 0.44	$ 0.36
Common stock equivalents excluded from income per diluted share because their effect would have been anti-dilutive	14	18