Profit Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Computations of profit per share

Computations of profit per share:	Three Months Ended March 31,
(Dollars in millions except per share data)	2013		2012
Profit for the period (A) 1:	$	880	$	1,586
Determination of shares (in millions):
Weighted-average number of common shares outstanding (B)	656.2		650.0
Shares issuable on exercise of stock awards, net of shares assumed to be purchased out of proceeds at average market price	15.4		20.2
Average common shares outstanding for fully diluted computation (C) 2	671.6		670.2
Profit per share of common stock:
Assuming no dilution (A/B)	$	1.34	$	2.44
Assuming full dilution (A/C) 2	$	1.31	$	2.37
Shares outstanding as of March 31 (in millions)	657.5		652.3

¹  Profit attributable to common stockholders.

²  Diluted by assumed exercise of stock-based compensation awards using the treasury stock method.