Summary Of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2011

Summary Of Significant Accounting Policies

Earnings Per Common Share

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Millions of Dollars, except per share amounts/Shares in Millions)	2011		2010		2011		2010
Net income for common stock	$	165	$	183	$	477	$	409
Weighted average common shares outstanding – Basic		292.7		282.0		292.3		281.7
Add: Incremental shares attributable to effect of potentially dilutive securities		1.6		1.5		1.6		1.5
Adjusted weighted average common shares outstanding – Diluted		294.3		283.5		293.9		283.2
Net income for common stock per common share – basic	$	0.57	$	0.65	$	1.63	$	1.45
Net income for common stock per common share – diluted	$	0.56	$	0.64	$	1.62	$	1.44