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

6 Months Ended

Jun. 30, 2013

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, 2013						For Three Months Ended June 30, 2012
	Net Income			Shares	EPS		Net Income			Shares	EPS
Basic EPS:
Net income	$	660					$	446
Less income allocated to RSUs	(11		)				(8		)
Income allocated to common stock for basic EPS calculation	$	649		1,103	$	.59	$	438		1,140	$	.38
Adjustment for dilutive shares:
Stock-based compensation plans				14						14
Diluted EPS:
Net income	$	660					$	446
Less income allocated to RSUs	(11		)				(8		)
Income allocated to common stock for diluted EPS calculation	$	649		1,117	$	.58	$	438		1,154	$	.38

	For Six Months Ended June 30, 2013						For Six Months Ended June 30, 2012
	Net Income			Shares	EPS		Net Income			Shares	EPS
Basic EPS:
Net income	$	1,022					$	711
Less income allocated to RSUs	(18		)				(12		)
Income allocated to common stock for basic EPS calculation	$	1,004		1,105	$	.91	$	699		1,142	$	.61
Adjustment for dilutive shares:
Stock-based compensation plans				15						17
Diluted EPS:
Net income	$	1,022					$	711
Less income allocated to RSUs	(18		)				(12		)
Income allocated to common stock for diluted EPS calculation	$	1,004		1,120	$	.90	$	699		1,159	$	.60