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

3 Months Ended

Mar. 31, 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 March 31, 2013						For Three Months Ended March 31, 2012
	Net Income			Shares	EPS		Net Income			Shares	EPS
Basic EPS:
Net income	$	362					$	265
Less income allocated to RSUs	(7		)				(4		)
Income allocated to common stock for basic EPS calculation	$	355		1,107	$	.32	$	261		1,143	$	.23
Adjustment for dilutive shares:
Stock-based compensation plans				16						22
Diluted EPS:
Net income	$	362					$	265
Less income allocated to RSUs	(7		)				(4		)
Income allocated to common stock for diluted EPS calculation	$	355		1,123	$	.32	$	261		1,165	$	.22