Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions		Oct. 31, 2018	Oct. 31, 2017
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance		$ 19.2	$ 25.5
Property, plant and equipment, accumulated depreciation	[1]	153.9	136.4
Other intangible assets, accumulated amortization	[2]	$ 250.4	$ 189.1
Preferred stock, par value (usd per share)		$ 0.01	$ 0.01
Preferred stock, shares authorized		500,000	500,000
Preferred stock, shares issued		0	0
Common stock, par value (usd per share)		$ 0.01	$ 0.01
Common stock, shares authorized		100,000,000	100,000,000
Common stock, shares issued		66,004,361	65,502,568
Common stock, shares outstanding		66,004,361	65,502,568

[1] For 2018, 2017, and 2016, depreciation expense was $46.5 million, $38.5 million, and $32.6 million, respectively.

[2] These intangible assets are being amortized over the expected period of benefit, with a weighted average life of approximately 13 years.