CONDENSED CONSOLIDATED STATEMENT OF EQUITY (UNAUDITED) (USD $) In Millions, unless otherwise specified	Common Stock [Member]	Capital in Excess of Par Value [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Total
Balance, December 31, 2011 at Dec. 31, 2011	$ 8.6	$ 76.3	$ (23.0)	$ 664.5	$ (71.5)	$ 654.9
Balance, December 31, 2011 (in shares) at Dec. 31, 2011	34.3		(0.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				44.8		44.8
Stock-based compensation		4.8				4.8
Shares issued under stock plans		(7.6)	12.2			4.6
Shares issued under stock plans (in shares)			0.3
Shares repurchased for employee tax withholdings			(2.2)			(2.2)
Excess tax benefit from employee stock plans		2.1				2.1
Dividends declared				(12.2)		(12.2)
Other comprehensive loss, net of tax					(17.3)	(17.3)
Balance, June 30, 2012 at Jun. 30, 2012	$ 8.6	$ 75.6	$ (13.0)	$ 697.1	$ (88.8)	$ 679.5
Balance, June 30, 2012 (in shares) at Jun. 30, 2012	34.3		(0.3)