SEGMENT INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Revenues
Revenues	$ 1,984.0	$ 1,897.8	$ 3,975.3	$ 3,834.1
Operating profit
Operating profit	92.7	75.0	164.1	181.0
Income from unconsolidated affiliates	0.6	0.6	1.7	1.0
Interest expense	(21.1)	(7.8)	(40.9)	(14.1)
Income before income taxes	72.3	67.8	125.0	168.0
Business & Industry
Revenues
Revenues	998.5	1,003.6	2,035.0	2,033.1
Manufacturing & Distribution
Revenues
Revenues	373.2	356.9	753.7	716.0
Education
Revenues
Revenues	216.7	204.4	431.6	410.1
Aviation
Revenues
Revenues	227.2	185.9	439.5	386.1
Technical Solutions
Revenues
Revenues	168.4	147.0	315.5	288.8
Technical Solutions | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Customer Contracts for Healthcare Technology Management
Operating profit
Gain on sale of assets			7.7	7.7
Operating Segments | Business & Industry
Revenues
Revenues	998.5	1,003.6	2,035.0	2,033.1
Operating profit
Operating profit	76.2	76.7	152.2	160.0
Operating Segments | Manufacturing & Distribution
Revenues
Revenues	373.2	356.9	753.7	716.0
Operating profit
Operating profit	40.8	41.9	81.7	82.5
Operating Segments | Education
Revenues
Revenues	216.7	204.4	431.6	410.1
Operating profit
Operating profit	11.8	11.7	23.6	24.3
Operating Segments | Aviation
Revenues
Revenues	227.2	185.9	439.5	386.1
Operating profit
Operating profit	23.6	9.6	31.9	18.5
Operating Segments | Technical Solutions
Revenues
Revenues	168.4	147.0	315.5	288.8
Operating profit
Operating profit	10.2	10.6	17.4	27.4
Operating Segments | Government Services
Operating profit
Operating profit	0.0	(0.3)	0.0	(0.3)
Corporate
Operating profit
Operating profit	(69.2)	(74.5)	(140.8)	(130.3)
Segment Reconciling Items
Operating profit
Income from unconsolidated affiliates	(0.6)	(0.6)	(1.7)	(1.0)
Adjustment for tax deductions for energy efficient government buildings, included in Technical Solutions	$ 0.0	$ (0.2)	$ (0.1)	$ (0.2)