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v3.20.1

Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2020 | Apr. 30, 2019 | Apr. 30, 2020 | Apr. 30, 2019
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 1,496.0 | $ 1,594.7 | $ 3,109.0 | $ 3,202.6
Operating Segments |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 1,526.4 | 1,627.3 | 3,170.0 | 3,269.6
Operating Segments | Business & Industry |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 785.6 | 807.7 | 1,606.5 | 1,636.6
Operating Segments | Technology & Manufacturing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 233.7 | 224.3 | 467.6 | 460.4
Operating Segments | Aviation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 184.7 | 250.0 | 423.5 | 502.4
Operating Segments | Education |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 200.1 | 209.3 | 408.0 | 418.2
Operating Segments | Technical Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 122.3 | 135.9 | 264.3 | 252.0
Operating Segments | Janitorial |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 996.7 | 979.1 | 1,996.9 | 1,969.6
Operating Segments | Janitorial | Business & Industry |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 597.0 | 576.3 | 1,190.5 | 1,160.2
Operating Segments | Janitorial | Technology & Manufacturing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 190.3 | 183.8 | 376.0 | 371.0
Operating Segments | Janitorial | Aviation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 31.9 | 31.1 | 66.7 | 63.0
Operating Segments | Janitorial | Education |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 177.5 | 187.9 | 363.7 | 375.4
Operating Segments | Janitorial | Technical Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Parking |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 176.4 | 216.7 | 396.1 | 438.8
Operating Segments | Parking | Business & Industry |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 97.1 | 125.7 | 222.9 | 253.8
Operating Segments | Parking | Technology & Manufacturing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 7.4 | 5.9 | 15.5 | 13.3
Operating Segments | Parking | Aviation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 71.3 | 84.3 | 156.3 | 170.1
Operating Segments | Parking | Education |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.6 | 0.8 | 1.4 | 1.6
Operating Segments | Parking | Technical Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Facility Services |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 157.1 | 177.4 | 330.3 | 372.7
Operating Segments | Facility Services | Business & Industry |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 91.3 | 105.6 | 192.8 | 222.2
Operating Segments | Facility Services | Technology & Manufacturing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 35.9 | 34.6 | 76.1 | 76.0
Operating Segments | Facility Services | Aviation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 7.9 | 16.6 | 18.5 | 33.3
Operating Segments | Facility Services | Education |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 22.0 | 20.6 | 43.0 | 41.3
Operating Segments | Facility Services | Technical Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Building & Energy Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 122.3 | 135.9 | 264.3 | 252.0
Operating Segments | Building & Energy Solutions | Business & Industry |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Building & Energy Solutions | Technology & Manufacturing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Building & Energy Solutions | Aviation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Building & Energy Solutions | Education |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Building & Energy Solutions | Technical Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 122.3 | 135.9 | 264.3 | 252.0
Operating Segments | Airline Services |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 73.8 | 118.2 | 182.3 | 236.5
Operating Segments | Airline Services | Business & Industry |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.1 | 0.2 | 0.3 | 0.4
Operating Segments | Airline Services | Technology & Manufacturing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.1
Operating Segments | Airline Services | Aviation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 73.7 | 118.0 | 182.0 | 236.1
Operating Segments | Airline Services | Education |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Operating Segments | Airline Services | Technical Solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 0.0 | 0.0 | 0.0 | 0.0
Intersegment Eliminations |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ (30.4) | $ (32.6) | $ (61.0) | $ (67.0)

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