Consolidated Statement of Changes in Stockholders' Equity (USD $) In Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at Dec. 31, 2012		$ 408.6	$ 1,012.7	$ 6,702.7	$ (283.0)	$ (314.0)
Net Unrealized Gains (Losses) on Securities Available for Sale	(80.2)				(80.2)
Stock Options and Awards			(38.5)			147.0
Net Income	355.1			355.1
Net Unrealized Gains (Losses) on Cash Flow Hedges	(3.1)				(3.1)
Stock Options and Awards - Amortization			39.2
Dividends Declared - Common Stock				(148.6)
Stock Purchased						(89.8)
Foreign Currency Translation Adjustments	1.6				1.6
Stock Options and Awards - Tax Benefits			0.9
Pension and Other Postretirement Benefit Adjustments	14.0				14.0
Balance at Jun. 30, 2013	7,724.6	408.6	1,014.3	6,909.2	(350.7)	(256.8)
Balance at Dec. 31, 2013	7,912.0	408.6	1,035.7	7,134.8	(244.3)	(422.8)
Net Unrealized Gains (Losses) on Securities Available for Sale	38.0				38.0
Stock Options and Awards			(47.1)			116.5
Net Income	363.3			363.3
Net Unrealized Gains (Losses) on Cash Flow Hedges	1.0				1.0
Stock Options and Awards - Amortization			42.1
Dividends Declared - Common Stock				(154.0)
Stock Purchased						(237.9)
Foreign Currency Translation Adjustments	(6.9)				(6.9)
Stock Options and Awards - Tax Benefits			8.6
Pension and Other Postretirement Benefit Adjustments	7.0				7.0
Balance at Jun. 30, 2014	$ 8,042.6	$ 408.6	$ 1,039.3	$ 7,344.1	$ (205.2)	$ (544.2)