Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total		Common Stock	Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Discontinued Operations Additional Paid-in Capital
Balance, beginning of year (in shares) at Oct. 31, 2012			54.4
Balance, beginning of year at Oct. 31, 2012			$ 0.6	$ 234.6		$ (2.2)	$ 617.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)			1.1
Stock issued under employee stock purchase and share-based compensation plans			$ 0.0	13.9
Stock repurchased, number of shares			0.0
Repurchase of common stock			$ 0.0	0.0
Share-based compensation expense(1)				13.3	[1]			$ 0.5
Other comprehensive (loss) income						0.5
Net income	$ 72.9						72.9
Balance, end of year (in shares) at Oct. 31, 2013			55.5
Dividends:
Common stock							(32.9)
Stock issued under share-based compensation plans							(0.6)
Balance, end of year at Oct. 31, 2013	$ 917.5		$ 0.6	261.8		(1.7)	656.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)			1.0
Stock issued under employee stock purchase and share-based compensation plans			$ 0.0	16.0
Stock repurchased, number of shares	(0.8)		(0.8)
Repurchase of common stock	$ (20.0)	[2]	$ 0.0	(20.0)
Share-based compensation expense(1)				16.3	[1]			0.5
Other comprehensive (loss) income						(1.1)
Net income	75.6						75.6
Balance, end of year (in shares) at Oct. 31, 2014			55.7
Dividends:
Common stock							(34.6)
Stock issued under share-based compensation plans							(0.9)
Balance, end of year at Oct. 31, 2014	$ 968.8		$ 0.6	274.1		(2.8)	696.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued under employee stock purchase and share-based compensation plans (in shares)			1.4
Stock issued under employee stock purchase and share-based compensation plans			$ 0.0	18.3
Stock repurchased, number of shares	(1.0)		(1.0)
Repurchase of common stock	$ (31.4)	[2]	$ 0.0	(31.4)
Share-based compensation expense(1)				14.5	[1]			$ 0.3
Other comprehensive (loss) income						(2.3)
Net income	76.3						76.3
Balance, end of year (in shares) at Oct. 31, 2015			56.1
Dividends:
Common stock							(36.0)
Stock issued under share-based compensation plans							(0.7)
Balance, end of year at Oct. 31, 2015	$ 1,007.5		$ 0.6	$ 275.5		$ (5.1)	$ 736.5

[1] Share-based compensation included expenses, recognized in discontinued operations, of $0.3 million in 2015 and $0.5 million for both 2014 and 2013.

[2] At October 31, 2015, authorization for $188.6 million of share repurchases remained under our current share repurchase program.