Consolidated Statements of Income of Comprhensive Income - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Oct. 31, 2016	Oct. 31, 2015		Oct. 31, 2014
Income Statement [Abstract]
Revenues	[1]	$ 5,144.7	$ 4,897.8		$ 4,649.7
Expenses
Operating		4,623.4	4,410.0		4,160.5
Selling, general and administrative		390.1	377.3		348.2
Restructuring and related		29.0	12.7		0.0
Amortization of intangible assets		25.0	24.2		26.2
Impairment loss		22.5	0.0		0.0
Total expenses		5,090.0	4,824.2		4,534.9
Operating profit		54.7	73.6		114.8
Income from unconsolidated affiliates, net		7.6	9.0		6.5
Interest expense		(10.4)	(10.2)		(10.7)
Income from continuing operations before income taxes		51.9	72.4		110.6
Income tax benefit (provision)		10.4	(18.3)		(43.7)
Income from continuing operations		62.3	54.1		66.9
Net (loss) income from discontinued operations		(5.1)	22.2	[2]	8.7
Net income		57.2	76.3		75.6
Other comprehensive income (loss)
Foreign currency translation		(26.3)	(2.2)		(1.3)
Other		(0.2)	(0.1)		0.2
Comprehensive income		$ 30.7	$ 74.0		$ 74.5
Net income per common share — Basic
Income from continuing operations (in usd per share)		$ 1.11	$ 0.95		$ 1.19
Income from discontinued operations (in usd per share)		(0.09)	0.40		0.16
Net income per common share-Basic (in usd per share)		1.02	1.35		1.35
Net income per common share — Diluted
Income from continuing operations (in usd per share)		1.09	0.94		1.17
Income from discontinued operations (in usd per share)		(0.09)	0.39		0.15
Net income per common share-Diluted (in usd per share)		$ 1.01	$ 1.33		$ 1.32
Weighted-average common and common equivalent shares outstanding
Basic (in shares)		56.3	56.7		56.1
Diluted (in shares)		56.9	57.4		57.1
Dividends declared per common share (in usd per share)		$ 0.66	$ 0.640		$ 0.620

[1] Substantially all of our long-lived assets are related to United States operations.

[2] Includes a $1.6 million unfavorable legal settlement related to our former Lighting segment, which we disposed of in 2008.