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
Mar. 31, 2013
Mar. 31, 2013
Mar. 31, 2012
Numerator:      
Net income attributable to common shareowners $ 1,037 $ 1,037 $ 970
Denominator:      
Weighted average shares   949 959
Deferred compensation obligations   1 2
Vested portion of restricted shares   2 1
Denominator for basic earnings per share   952 962
Denominator for diluted earnings per share   960 972
Basic earnings per share   $ 1.09 $ 1.01
Diluted earnings per share   $ 1.08 $ 1.00
Restricted performance units
     
Denominator:      
Incremental common shares attributable to share-based payment arrangements   7 9
Stock option plans
     
Denominator:      
Incremental common shares attributable to share-based payment arrangements   1 1