Goodwill and other intangible assets - Summary of Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	3 Months Ended
	Jan. 31, 2025 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 3,280,819
Acquisitions	130
Currency effect	(38,605)
Ending balance	3,242,344
Industrial Precision Solutions
Goodwill [Roll Forward]
Beginning balance	1,207,631
Acquisitions	0
Currency effect	(43,224)
Ending balance	1,135,397
Advanced Technology Solutions
Goodwill [Roll Forward]
Beginning balance	403,440
Acquisitions	0
Currency effect	6,549
Ending balance	438,999
Medical Fluid Systems
Goodwill [Roll Forward]
Beginning balance	1,669,748
Acquisitions	130
Currency effect	(1,930)
Ending balance	$ 1,667,948