Description of business and significant accounting policies and practices (Tables)

6 Months Ended

Jun. 30, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Computation and reconciliation of earnings per common share

Computation and reconciliation of earnings per common share are as follows (shares in millions):

	For Three Months Ended June 30, 2012						For Three Months Ended June 30, 2011
	Net Income			Shares	EPS		Net Income			Shares	EPS
Basic EPS:
Net income	$	446					$	672
Less income allocated to RSUs	(8		)				(11		)
Income allocated to common stock for basic EPS calculation	$	438		1,140	$	.38	$	661		1,156	$	.57
Adjustment for dilutive shares:
Stock-based compensation plans				14						24
Diluted EPS:
Net income	$	446					$	672
Less income allocated to RSUs	(8		)				(10		)
Income allocated to common stock for diluted EPS calculation	$	438		1,154	$	.38	$	662		1,180	$	.56

	For Six Months Ended June 30, 2012						For Six Months Ended June 30, 2011
	Net Income			Shares	EPS		Net Income			Shares	EPS
Basic EPS:
Net income	$	711					$	1,338
Less income allocated to RSUs	(12		)				(21		)
Income allocated to common stock for basic EPS calculation	$	699		1,142	$	.61	$	1,317		1,161	$	1.13
Adjustment for dilutive shares:
Stock-based compensation plans				17						26
Diluted EPS:
Net income	$	711					$	1,338
Less income allocated to RSUs	(12		)				(21		)
Income allocated to common stock for diluted EPS calculation	$	699		1,159	$	.60	$	1,317		1,187	$	1.11