Annual report pursuant to Section 13 and 15(d)

EARNINGS PER SHARE - Computation of Basic and Diluted Earnings Per Share (Detail)

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EARNINGS PER SHARE - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Numerator:                      
Net income attributable to common shareowners $ (1,748) $ 469 $ 1,116 $ 970 $ 725 $ 1,072 $ 1,092 $ 915 $ 807 $ 3,804 $ 3,338
Denominator:                      
Weighted average shares                 957 977 991
Deferred compensation obligations                 1 2 2
Vested portion of restricted shares                 2 2 1
Denominator for basic earnings per share                 960 981 994
Effect of dilutive securities:                      
Denominator for diluted earnings per share                 969 991 1,003
Basic earnings per share $ (1.83) $ 0.49 $ 1.16 $ 1.01 $ 0.75 $ 1.10 $ 1.11 $ 0.92 $ 0.84 $ 3.88 $ 3.36
Diluted earnings per share $ (1.83) $ 0.48 $ 1.15 $ 1.00 $ 0.74 $ 1.09 $ 1.09 $ 0.91 $ 0.83 $ 3.84 $ 3.33
Restricted Performance Units [Member]
                     
Effect of dilutive securities:                      
Dilutive securities                 3 3 3
Restricted Stock Units (RSUs) [Member]
                     
Effect of dilutive securities:                      
Dilutive securities                 5 6 6
Stock Option Plans [Member]
                     
Effect of dilutive securities:                      
Dilutive securities                 1 1 0