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Operating segments - Segments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2021
Segment Reporting Information [Line Items]        
Net external sales $ 635,403 $ 589,538 $ 1,244,569 $ 1,116,104
Operating profit (loss) 183,973 166,391 339,833 275,416
Operating Segments        
Segment Reporting Information [Line Items]        
Net external sales 635,403 589,538 1,244,569 1,116,104
Operating profit (loss) 183,973 166,391 339,833 275,416
Operating Segments | Industrial Precision Solutions        
Segment Reporting Information [Line Items]        
Net external sales 316,434 298,775 640,367 587,191
Operating profit (loss) 102,196 104,283 204,384 187,686
Operating Segments | Advanced Technology Solutions        
Segment Reporting Information [Line Items]        
Net external sales 318,969 290,763 604,202 528,913
Operating profit (loss) 98,458 76,585 174,785 123,786
Corporate        
Segment Reporting Information [Line Items]        
Operating profit (loss) $ (16,681) $ (14,477) $ (39,336) $ (36,056)