Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Oct. 31, 2018		Oct. 31, 2017	Oct. 31, 2016
Income Statement [Abstract]
Revenues	[1]	$ 6,442.2		$ 5,453.6	$ 5,144.7
Operating expenses		5,747.4		4,881.2	4,603.4
Selling, general and administrative expenses		438.0		436.6	410.1
Restructuring and related expenses		25.7	[2]	20.9	29.0	[2]
Amortization of intangible assets		66.0		31.6	25.0
Impairment loss (recovery)		26.5		(18.5)	22.5
Operating profit		138.6		101.9	54.7
Income from unconsolidated affiliates, net		3.2		4.2	7.6
Interest expense		(54.1)		(19.2)	(10.4)
Income from continuing operations before income taxes		87.7		86.9	51.9
Income tax benefit (provision)		8.2		(8.8)	10.4
Income from continuing operations		95.9		78.1	62.3
Income (loss) from discontinued operations, net of taxes		1.8		(74.3)	(5.1)
Net income		97.8		3.8	57.2
Other comprehensive income (loss)
Interest rate swaps		21.9		2.7	(0.1)
Foreign currency translation		(4.7)		9.7	(26.3)
Income tax provision		(5.9)		(1.1)	(0.1)
Comprehensive income		$ 109.0		$ 15.2	$ 30.7
Net income per common share — Basic
Income from continuing operations (usd per share)		$ 1.45		$ 1.35	$ 1.11
(Loss) income from discontinued operations (usd per share)		0.03		(1.29)	(0.09)
Net income (usd per share)		1.48		0.07	1.02
Net income per common share — Diluted
Income from continuing operations (usd per share)		1.45		1.34	1.09
(Loss) income from discontinued operations (usd per share)		0.03		(1.27)	(0.09)
Net income (usd per share)		$ 1.47		$ 0.07	$ 1.01
Weighted-average common and common equivalent shares outstanding
Basic (in shares)		66.1		57.7	56.3
Diluted (in shares)		66.4		58.3	56.9
Dividends declared per common share (usd per share)		$ 0.7		$ 0.68	$ 0.66

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

[2] We include these costs within corporate expenses.