Accumulated other comprehensive loss - Summary of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Apr. 30, 2024	Jan. 31, 2024	Apr. 30, 2023	Jan. 31, 2023	Apr. 30, 2024	Apr. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,723,967	$ 2,598,060	$ 2,446,685	$ 2,294,375	$ 2,598,060	$ 2,294,375
Pension and other postretirement plan adjustments, net of tax of $135	19		(173)		(440)	(749)
Foreign currency translation adjustments (a)	(32,620)	43,943	(290)	76,821	11,323	76,531
Ending balance	2,788,271	2,723,967	2,497,002	2,446,685	2,788,271	2,497,002
Amortization of prior service costs and net actuarial losses, tax					135
Other Comprehensive Income (Loss), Net Investment Hedge, Tax					1,347
Other Comprehensive Income (Loss), Net Investment Hedge, Gross					(4,507)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(152,957)	(196,441)	(131,537)	(207,782)	(196,441)	(207,782)
Foreign currency translation adjustments (a)	(32,620)	43,943	(290)	76,821
Ending balance	(185,558)	(152,957)	$ (132,000)	$ (131,537)	(185,558)	$ (132,000)
Cumulative translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(133,280)			(133,280)
Pension and other postretirement plan adjustments, net of tax of $135					0
Foreign currency translation adjustments (a)					11,323
Ending balance	(121,957)				(121,957)
Pension and postretirement  benefit plan adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		$ (63,161)			(63,161)
Pension and other postretirement plan adjustments, net of tax of $135					(440)
Foreign currency translation adjustments (a)					0
Ending balance	$ (63,601)				$ (63,601)