Consolidated Statements of Equity (unaudited) (USD $) In Millions, unless otherwise specified	Total	Common Stock and Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2011	$ 167.5	$ 473.6	$ 301.1	$ (36.8)	$ (578.5)	$ 8.1
Increase (Decrease) in Stockholders' Equity
Net income	131.0		130.2			0.8
Stock plan activity	25.0	13.6		11.4
Other comprehensive income	(34.9)				(35.2)	0.3
Balance at Jun. 30, 2012	288.6	487.2	431.3	(25.4)	(613.7)	9.2
Balance at Dec. 31, 2012	318.3	537.3	395.2	(16.8)	(607.3)	9.9
Increase (Decrease) in Stockholders' Equity
Net income	136.5		135.7			0.8
Stock plan activity	32.9	21.0		11.9
Shares issued	0.8	0.8
Other comprehensive income	45.6				45.8	(0.2)
Balance at Jun. 30, 2013	$ 534.1	$ 559.1	$ 530.9	$ (4.9)	$ (561.5)	$ 10.5