Quarterly report pursuant to Section 13 or 15(d)

Computation of Basic and Diluted Earnings Per Share (Detail)

v2.4.0.6
Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Numerator:        
Net income attributable to common shareowners $ 1,116 $ 1,092 $ 2,086 $ 2,007
Denominator:        
Weighted average shares 959 984 959 986
Deferred compensation obligations 2 2 2 2
Vested portion of restricted shares 1 2 1 2
Denominator for basic earnings per share 962 988 962 990
Incremental common shares attributable to share-based payment arrangements     5 6
Denominator for diluted earnings per share 971 998 972 1,000
Basic earnings per share $ 1.16 $ 1.11 $ 2.17 $ 2.03
Diluted earnings per share $ 1.15 $ 1.09 $ 2.15 $ 2.01
Restricted performance units
        
Denominator:        
Incremental common shares attributable to share-based payment arrangements 3 3 4 3
Restricted stock units
        
Denominator:        
Incremental common shares attributable to share-based payment arrangements 5 6    
Stock option plans
        
Denominator:        
Incremental common shares attributable to share-based payment arrangements 1 1 1 1