SEGMENT INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Revenues
Total Revenues	$ 2,018.2	$ 1,984.0	$ 4,087.8	$ 3,975.3
Operating profit
Total operating profit	81.3	92.7	155.4	164.1
Income from unconsolidated affiliates	1.7	0.6	3.0	1.7
Interest expense	(20.6)	(21.1)	(41.9)	(40.9)
Income before income taxes	62.4	72.3	116.4	125.0
Business & Industry
Revenues
Total Revenues	989.6	998.5	2,022.8	2,035.0
Manufacturing & Distribution
Revenues
Total Revenues	388.6	373.2	789.5	753.7
Education
Revenues
Total Revenues	225.6	216.7	445.7	431.6
Aviation
Revenues
Total Revenues	238.2	227.2	487.8	439.5
Technical Solutions
Revenues
Total Revenues	176.2	168.4	342.1	315.5
Operating Segments | Business & Industry
Operating profit
Total operating profit	77.6	76.2	157.2	152.2
Operating Segments | Manufacturing & Distribution
Operating profit
Total operating profit	43.6	40.8	85.0	81.7
Operating Segments | Education
Operating profit
Total operating profit	11.5	11.8	24.3	23.6
Operating Segments | Aviation
Operating profit
Total operating profit	13.1	23.6	22.8	31.9
Operating Segments | Technical Solutions
Operating profit
Total operating profit	17.0	10.2	23.5	17.4
Corporate
Operating profit
Total operating profit	(79.7)	(69.2)	(154.4)	(140.8)
Segment Reconciling Items
Operating profit
Income from unconsolidated affiliates	(1.7)	(0.6)	(3.0)	(1.7)
Adjustment for tax deductions for energy efficient government buildings, included in Technical Solutions	$ 0.0	$ 0.0	$ 0.0	$ (0.1)