GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 2,491.3	$ 2,485.6
Acquisitions	80.6	1.1
Foreign currency translation	4.1	4.7
Ending balance	2,575.9	2,491.3
Business & Industry
Goodwill [Roll Forward]
Beginning balance	1,092.7	1,087.8
Acquisitions	0.0	1.3
Foreign currency translation	2.6	3.6
Ending balance	1,095.5	1,092.7
Manufacturing & Distribution
Goodwill [Roll Forward]
Beginning balance	502.2	502.2
Acquisitions	0.0	0.0
Foreign currency translation	0.0	0.0
Ending balance	502.2	502.2
Education
Goodwill [Roll Forward]
Beginning balance	459.3	459.3
Acquisitions	0.0	0.0
Foreign currency translation	0.0	0.0
Ending balance	459.3	459.3
Aviation
Goodwill [Roll Forward]
Beginning balance	69.0	68.7
Acquisitions	0.0	0.0
Foreign currency translation	0.4	0.3
Ending balance	69.4	69.0
Technical Solutions
Goodwill [Roll Forward]
Beginning balance	368.0	367.4
Acquisitions	80.6	(0.1)
Foreign currency translation	1.1	0.8
Ending balance	$ 449.6	$ 368.0