CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Retained Earnings	Treasury Stock
Balance at Beginning of Year at Dec. 31, 2010		$ 36.5	$ 2,615.4	$ 351.4	$ 6,591.8	$ (1,110.2)
Common Stock Activity		0.1	20.7
Retirement of Repurchased Common Shares		(0.8)	(55.2)		(144.0)
All Other Changes During Year	547.1			547.1
Net Income	653.2				653.2
Dividends to Stockholders (per common share: $0.34; $0.29)					(90.3)
Purchases of Treasury Stock						(419.9)
Balance at End of Period at Sep. 30, 2011	8,995.8	35.8	2,580.9	898.5	7,010.7	(1,530.1)
Balance at Beginning of Year at Dec. 31, 2011	8,169.7	35.9	2,591.1	461.8	6,611.0	(1,530.1)
Common Stock Activity		0.1	13.1
Retirement of Repurchased Common Shares		0	0		0
All Other Changes During Year	328.5			328.5
Net Income	660.5				660.5
Dividends to Stockholders (per common share: $0.34; $0.29)					(98.1)
Purchases of Treasury Stock	(400.5)					(400.5)
Balance at End of Period at Sep. 30, 2012	$ 8,673.3	$ 36.0	$ 2,604.2	$ 790.3	$ 7,173.4	$ (1,930.6)