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Note 11 - Stock-Based Plans Restricted Stock Units (Details) (Restricted Stock Units (RSUs) [Member], USD $)
In Millions, except Per Share data, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Restricted Stock Units (RSUs) [Member]
 
Restricted Stock Unit Activity  
Restricted stock units outstanding, beginning of period 40
Awarded and assumed 16
Vested (12)
Forfeited (2)
Restricted stock units outstanding, end of period 42
Weighted average grant date fair value for restricted stock units awarded, during period $ 36.60