CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) (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, 2012		$ 36.0	$ 2,607.7	$ 628.0	$ 7,371.6	$ (2,030.7)
Common Stock Activity			12.0
Other Comprehensive Income (Loss)	(411.3)			(411.3)
Net Income	431.2				431.2
Dividends to Stockholders (per common share: $0.29; $0.26)					(70.4)
Purchases of Treasury Stock	(193.5)					(193.5)
Balance at End of Period at Jun. 30, 2013	8,380.6	36.0	2,619.7	216.7	7,732.4	(2,224.2)
Balance at Beginning of Year at Dec. 31, 2013	8,659.1	36.1	2,634.1	255.0	8,083.2	(2,349.3)
Common Stock Activity			12.1
Other Comprehensive Income (Loss)	376.9			376.9
Net Income	471.4				471.4
Dividends to Stockholders (per common share: $0.29; $0.26)					(75.7)
Purchases of Treasury Stock	(200.1)					(200.1)
Balance at End of Period at Jun. 30, 2014	$ 9,243.7	$ 36.1	$ 2,646.2	$ 631.9	$ 8,478.9	$ (2,549.4)