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

3 Months Ended

Mar. 31, 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 March 31, 2012						For Three Months Ended March 31, 2011
	Net Income			Shares	EPS		Net Income			Shares	EPS
Basic EPS:
Net income	$	265					$	666
Less income allocated to RSUs	(4		)				(10		)
Income allocated to common stock for basic EPS calculation	$	261		1,143	$	.23	$	656		1,167	$	.56
Adjustment for dilutive shares:
Stock-based compensation plans				22						27
Diluted EPS:
Net income	$	265					$	666
Less income allocated to RSUs	(4		)				(10		)
Income allocated to common stock for diluted EPS calculation	$	261		1,165	$	.22	$	656		1,194	$	.55