CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock	Treasury	Additional Paid In Capital	Accumulated Other Comprehensive Income	Retained Earnings
Balance at Dec. 31, 2009	$ 1,085.1	$ 33.0	$ (10.9)	$ 210.0	$ (81.0)	$ 934.0
Balance (in shares) at Dec. 31, 2009		44.6	(3.6)
Increase (Decrease) in Stockholders' Equity
Net Income	92.1					92.1
Other comprehensive income, net of tax	(1.0)				(1.0)
Excess tax benefit and share withholding	(2.7)			(0.7)		(2.0)
Share-based compensation	7.5			7.5
Shares issued	7.4	1.0		6.4
Shares issued (in shares)		0.3
Dividends	(52.2)					(52.2)
Balance at Dec. 31, 2010	1,136.2	34.0	(10.9)	223.2	(82.0)	971.9
Balance (in shares) at Dec. 31, 2010		44.9	(3.6)
Increase (Decrease) in Stockholders' Equity
Net Income	34.2					34.2
Other comprehensive income, net of tax	(9.9)				(9.9)
Share-based compensation	7.5			7.5
Shares issued	7.6			7.6
Shares issued (in shares)		0.4
Dividends	(53.1)					(53.1)
Balance at Dec. 31, 2011	1,122.5	34.0	(10.9)	238.3	(91.9)	953.0
Balance (in shares) at Dec. 31, 2011	41.7	45.3	(3.6)
Increase (Decrease) in Stockholders' Equity
Net Income	45.9					45.9
Other comprehensive income, net of tax	(0.5)				(0.5)
Excess tax benefit and share withholding	(2.0)	(0.1)		0.5		(2.4)
Excess tax benefit and share withholding (in shares)		(0.1)
Share-based compensation	6.5			6.5
Shares issued	23.1	0.7		22.4
Shares issued (in shares)		1.0
Retirement of treasury shares		(2.7)	10.9	(8.2)
Retirement of treasury shares (in shares)		(3.6)	3.6
Dividends	(39.5)					(39.5)
Distribution of A&B Stock	(876.1)			(6.8)	46.9	(916.2)
Balance at Dec. 31, 2012	$ 279.9	$ 31.9		$ 252.7	$ (45.5)	$ 40.8
Balance (in shares) at Dec. 31, 2012	42.6	42.6