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
Beginning Balance at Dec. 31, 2011		$ 408.6	$ 977.5	$ 6,302.3	$ (345.6)	$ (225.5)
Net Unrealized Gains (Losses) on Securities Available for Sale	20.0				20.0
Stock Options and Awards			(18.9)			25.4
Net Income	161.2			161.2
Net Unrealized Gains (Losses) on Cash Flow Hedges	11.3				11.3
Stock Options and Awards - Amortization			24.1
Dividends Declared - Common Stock				(140.0)
Stock Purchased						(14.4)
Foreign Currency Translation Adjustments	15.8				15.8
Stock Options and Awards - Tax Benefits			(0.8)
Pension and Other Postretirement Benefit Adjustments	22.2				22.2
Ending Balance at Mar. 31, 2012	7,223.2	408.6	981.9	6,323.5	(276.3)	(214.5)
Beginning Balance at Dec. 31, 2012	7,527.0	408.6	1,012.7	6,702.7	(283.0)	(314.0)
Net Unrealized Gains (Losses) on Securities Available for Sale	1.3				1.3
Stock Options and Awards			(35.6)			87.1
Net Income	164.0			164.0
Net Unrealized Gains (Losses) on Cash Flow Hedges	(5.2)				(5.2)
Stock Options and Awards - Amortization			20.8
Dividends Declared - Common Stock				(72.9)
Stock Purchased						(74.5)
Foreign Currency Translation Adjustments	(4.2)				(4.2)
Stock Options and Awards - Tax Benefits			(2.7)
Pension and Other Postretirement Benefit Adjustments	7.0				7.0
Ending Balance at Mar. 31, 2013	$ 7,612.1	$ 408.6	$ 995.2	$ 6,793.8	$ (284.1)	$ (301.4)