Share Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Share-Based Compensation Plans [Abstract]

Amounts of share-based compensation cost recorded in the Consolidated Statement of Income

     The following table provides amounts of share-based compensation cost recorded in the Consolidated Statement of Income:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
($ in millions)	2011			2010			2011			2010
Pretax share-based compensation expense	$	107		$	142		$	200		$	274
Income tax benefit		(37	)		(49	)		(69	)		(93	)
Total share-based compensation expense, net of taxes	$	70		$	93		$	131		$	181

Assumptions for weighted average fair value of options granted

The weighted average fair value of options granted for the first six months of 2011 and 2010 was $5.37 and $8.02 per option, respectively, and was determined using the following assumptions:

	Six Months Ended
	June 30,
	2011			2010
Expected dividend yield		4.3	%		4.1	%
Risk-free interest rate		2.6	%		2.8	%
Expected volatility		23.2	%		33.8	%
Expected life (years)		7.0			6.8