Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jan. 31, 2016	Oct. 31, 2016	Oct. 31, 2015		Oct. 31, 2014	Oct. 26, 2015
Discontinued Operations and Disposal Groups [Abstract]
Cash proceeds of assets sold						$ 131.0
Working capital adjustment to previously recorded gain		$ 3.1	$ 0.0	[1]	$ 0.0
Lighting Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments for Legal Settlements			$ 1.6
Security
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Taxes Paid	$ 20.0

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