Acquisitions (Details) - USD ($) $ in Millions |
12 Months Ended | |||||
---|---|---|---|---|---|---|
Sep. 30, 2016 |
Dec. 01, 2015 |
May 01, 2015 |
Oct. 31, 2014 |
Oct. 31, 2016 |
Oct. 31, 2015 |
|
Business Acquisition [Line Items] | ||||||
Business acquisition aggregate purchase price | $ 52.9 | |||||
Goodwill | 854.7 | $ 912.8 | $ 867.5 | |||
Contingent consideration | $ 3.3 | |||||
Contingent consideration, payable | $ 1.7 | |||||
8 Solutions Ltd | ||||||
Business Acquisition [Line Items] | ||||||
Business acquisition aggregate purchase price | $ 16.1 | |||||
Westway Services Holdings | ||||||
Business Acquisition [Line Items] | ||||||
Business acquisition aggregate purchase price | $ 81.0 | |||||
Goodwill | 54.2 | |||||
Other intangible assets | $ 22.5 | |||||
CTS Services/Facility Support Services | ||||||
Business Acquisition [Line Items] | ||||||
Business acquisition aggregate purchase price | $ 18.8 | |||||
Contingent consideration liability | $ 3.8 |