Consolidated Statements of Changes in Stockholders Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock	Common Stock Held in Treasury and Employee Benefit Trust	Capital in Excess of Par Value of Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interest
Beginning balance at Dec. 31, 2009	$ 1,111.8	$ 1.4	$ (821.8)	$ 710.1	$ 1,438.9	$ (225.8)	$ 9.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	377.9				375.5		2.4
Other comprehensive income (loss)	(26.3)					(26.3)
Issuance of common stock	2.3			2.3
Excess tax benefits on stock-based payment arrangements	5.5			5.5
Taxes withheld on issuance of stock-based awards	(17.5)			(17.5)
Purchases of treasury stock (Note 13)	(164.4)		(164.4)
Reissuances of treasury stock (Note 13)			32.6	(32.6)
Net purchases of common stock for employee benefit trust	5.8		2.4	3.4
Stock-based compensation (Note 12)	27.5			27.5
Other	(0.3)				0.5		(0.8)
Ending balance at Dec. 31, 2010	1,322.3	1.4	(951.2)	698.7	1,814.9	(252.1)	10.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	403.5				399.8		3.7
Other comprehensive income (loss)	(191.7)					(191.7)
Issuance of common stock	1.3			1.3
Excess tax benefits on stock-based payment arrangements	8.7			8.7
Taxes withheld on issuance of stock-based awards	(15.5)			(15.5)
Purchases of treasury stock (Note 13)	(114.0)		(114.0)
Reissuances of treasury stock (Note 13)			19.9	(19.9)
Net purchases of common stock for employee benefit trust	(2.1)		(2.4)	0.3
Stock-based compensation (Note 12)	26.3			26.3
Other	(1.1)			0.1			(1.2)
Ending balance at Dec. 31, 2011	1,437.7	1.4	(1,047.7)	700.0	2,214.7	(443.8)	13.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	434.8				430.0		4.8
Other comprehensive income (loss)	47.8					47.8
Issuance of common stock	0.7			0.7
Excess tax benefits on stock-based payment arrangements	27.1			27.1
Taxes withheld on issuance of stock-based awards	(34.8)			(34.8)
Purchases of treasury stock (Note 13)	(91.1)		(91.1)
Reissuances of treasury stock (Note 13)			30.4	(30.4)
Net purchases of common stock for employee benefit trust	(1.4)		(2.0)	0.6
Stock-based compensation (Note 12)	34.0			34.0
Other	(1.6)						(1.6)
Ending balance at Dec. 31, 2012	$ 1,853.2	$ 1.4	$ (1,110.4)	$ 697.2	$ 2,644.7	$ (396.0)	$ 16.3