Stockholders' Equity and Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share, Basic and Diluted [Abstract]

Net Income Per Common Share

Net income per common share is determined as follows:

	Three Months Ended September 30				Nine Months Ended September 30
	2012		2011		2012		2011
	(in millions of dollars, except share data)
Numerator
Net Income	$	230.2	$	202.0	$	660.5	$	653.2
Denominator (000s)
Weighted Average Common Shares - Basic	278,354.4		298,185.8		284,012.8		305,694.5
Dilution for Assumed Exercises of Stock Options and Nonvested Stock Awards	156.6		987.1		478.4		1,223.9
Weighted Average Common Shares - Assuming Dilution	278,511.0		299,172.9		284,491.2		306,918.4
Net Income Per Common Share
Basic	$	0.83	$	0.68	$	2.33	$	2.14
Assuming Dilution	$	0.83	$	0.68	$	2.32	$	2.13