v2.4.0.6
Common Stock and Stock Plans, Stock Incentive Compensation Expense (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Allocation of Stock Incentive Compensation Expense and Related Recognized Tax Benefit [Abstract]      
Restricted share rights expense $ 338 $ 252 $ 3
Performance shares 128 66 21
Stock options 63 118 221
Total stock incentive compensation expense 529 436 245
Related recognized tax benefit $ 200 $ 165 $ 92