Acquisitions (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	May. 01, 2015	Nov. 01, 2012	Oct. 31, 2014	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2015
Business Acquisition [Line Items]
Contingent consideration liability					$ 1.6
Business acquisition aggregate purchase price				$ 52.9	49.9
Contingent consideration				3.3
Contingent Consideration, Payable						$ 2.8
Goodwill			$ 854.7	$ 854.7	$ 822.5	$ 867.5
Contingent Consideration change in amount			$ 0.2
CTS Services/Facility Support Services
Business Acquisition [Line Items]
Contingent consideration liability	$ 3.8
Business acquisition aggregate purchase price	$ 18.8
Air Serv
Business Acquisition [Line Items]
Business acquisition aggregate purchase price		$ 162.9
Goodwill		89.2
Other intangible assets		$ 44.6