Accumulated other comprehensive loss - Summary of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Apr. 30, 2023	Jan. 31, 2023	Apr. 30, 2022	Jan. 31, 2022	Apr. 30, 2023	Apr. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,446,685	$ 2,294,375	$ 2,218,628	$ 2,159,130	$ 2,294,375	$ 2,159,130
Pension and other postretirement plan adjustments, net of tax of ($253)	(173)		2,778		(749)	5,838
Foreign currency translation adjustments (a)	(290)	76,821	(46,901)	(13,358)	76,531	(60,259)
Ending balance	2,497,002	2,446,685	2,190,616	2,218,628	2,497,002	2,190,616
Amortization of prior service costs and net actuarial losses, tax					253
Other Comprehensive Income (Loss), Net Investment Hedge, Tax					1,078
Other Comprehensive Income (Loss), Net Investment Hedge, Net of Tax					(3,611)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(131,537)	(207,782)	(186,133)	(175,835)	(207,782)	(175,835)
Foreign currency translation adjustments (a)	(290)	76,821	(46,901)	(13,358)
Ending balance	(132,000)	(131,537)	$ (198,209)	$ (186,133)	(132,000)	$ (198,209)
Cumulative translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(160,046)			(160,046)
Pension and other postretirement plan adjustments, net of tax of ($253)					0
Foreign currency translation adjustments (a)					76,531
Ending balance	(83,515)				(83,515)
Pension and postretirement  benefit plan adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		$ (47,736)			(47,736)
Pension and other postretirement plan adjustments, net of tax of ($253)					(749)
Foreign currency translation adjustments (a)					0
Ending balance	$ (48,485)				$ (48,485)