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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jan. 31, 2019 | Jan. 31, 2018
Revenue from External Customer [Line Items] |  |
Revenues | $ 1,607.9 | $ 1,588.3
Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 774.5 |
Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 252.4 |
Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 236.1 |
Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 204.7 |
Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 107.9 |
Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 66.7 |
Janitorial |  |
Revenue from External Customer [Line Items] |  |
Revenues | 989.9 |
Janitorial | Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 549.7 |
Janitorial | Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 31.1 |
Janitorial | Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 187.8 |
Janitorial | Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 183.3 |
Janitorial | Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Janitorial | Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 38.0 |
Parking |  |
Revenue from External Customer [Line Items] |  |
Revenues | 222.1 |
Parking | Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 114.4 |
Parking | Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 85.8 |
Parking | Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 7.4 |
Parking | Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.8 |
Parking | Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Parking | Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 13.7 |
Facility Services |  |
Revenue from External Customer [Line Items] |  |
Revenues | 204.7 |
Facility Services | Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 110.2 |
Facility Services | Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 18.0 |
Facility Services | Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 40.8 |
Facility Services | Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 20.7 |
Facility Services | Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Facility Services | Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 15.0 |
Airline Services |  |
Revenue from External Customer [Line Items] |  |
Revenues | 117.7 |
Airline Services | Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.2 |
Airline Services | Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 117.5 |
Airline Services | Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Airline Services | Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Airline Services | Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Airline Services | Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Building & Energy Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 107.9 |
Building & Energy Solutions | Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Building & Energy Solutions | Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Building & Energy Solutions | Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Building & Energy Solutions | Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Building & Energy Solutions | Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 107.9 |
Building & Energy Solutions | Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 0.0 |
Operating Segments |  |
Revenue from External Customer [Line Items] |  |
Revenues | 1,642.3 |
Operating Segments | Business & Industry |  |
Revenue from External Customer [Line Items] |  |
Revenues | 774.5 | 756.3
Operating Segments | Aviation |  |
Revenue from External Customer [Line Items] |  |
Revenues | 252.4 | 260.1
Operating Segments | Technology & Manufacturing |  |
Revenue from External Customer [Line Items] |  |
Revenues | 236.1 | 232.2
Operating Segments | Education |  |
Revenue from External Customer [Line Items] |  |
Revenues | 204.7 | 206.9
Operating Segments | Technical Solutions |  |
Revenue from External Customer [Line Items] |  |
Revenues | 107.9 | 104.0
Operating Segments | Healthcare |  |
Revenue from External Customer [Line Items] |  |
Revenues | 66.7 | 67.7
Intersegment Eliminations |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ (34.4) | $ (38.9)

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