Condensed Consolidated Statements of Shareholders' Equity (UNAUDITED) - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI [Member]	Common Shares in Treasury, At Cost [Member]
Balance at Oct. 31, 2017	$ 1,155,493	$ 12,253	$ 412,785	$ 2,164,597	$ (134,435)	$ (1,299,707)
Shares issued under company stock and employee benefit plans	10,305		6,526			3,779
Stock-based compensation	6,987		6,987
Purchase of treasury shares, value	(4,989)					(4,989)
Dividends declared	(17,321)			(17,321)
Net income	104,555			104,555
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	38,582				38,582
Defined benefit pension and post-retirement plans adjustment	1,509				1,509
Balance at Jan. 31, 2018	1,295,121	12,253	426,298	2,251,831	(94,344)	(1,300,917)
Balance at Oct. 31, 2017	1,155,493	12,253	412,785	2,164,597	(134,435)	(1,299,707)
Net income	195,790
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	19,298
Balance at Apr. 30, 2018	1,362,910	12,253	435,070	2,325,690	(110,816)	(1,299,287)
Balance at Jan. 31, 2018	1,295,121	12,253	426,298	2,251,831	(94,344)	(1,300,917)
Shares issued under company stock and employee benefit plans	5,291		3,645			1,646
Stock-based compensation	5,127		5,127
Purchase of treasury shares, value	(16)					(16)
Dividends declared	(17,376)			(17,376)
Net income	91,235			91,235
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(19,284)				(19,284)
Defined benefit pension and post-retirement plans adjustment	2,812				2,812
Balance at Apr. 30, 2018	1,362,910	12,253	435,070	2,325,690	(110,816)	(1,299,287)
Balance at Oct. 31, 2018	1,450,741	12,253	446,555	2,488,375	(179,314)	(1,317,128)
Shares issued under company stock and employee benefit plans	3,607		1,016			2,591
Stock-based compensation	4,359		4,359
Purchase of treasury shares, value	(107,667)					(107,667)
Dividends declared	(20,210)			(20,210)
Net income	48,567			48,567
Impact of adoption of ASU 2014-09 (See Note 2)	4,329			4,329
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	16,463				16,463
Defined benefit pension and post-retirement plans adjustment	1,352				1,352
Balance at Jan. 31, 2019	1,401,541	12,253	451,930	2,521,061	(161,499)	(1,422,204)
Balance at Oct. 31, 2018	1,450,741	12,253	446,555	2,488,375	(179,314)	(1,317,128)
Net income	140,490
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	7,399
Balance at Apr. 30, 2019	1,471,263	12,253	464,915	2,592,955	(168,965)	(1,429,895)
Balance at Jan. 31, 2019	1,401,541	12,253	451,930	2,521,061	(161,499)	(1,422,204)
Shares issued under company stock and employee benefit plans	10,847		8,116			2,731
Stock-based compensation	4,869		4,869
Purchase of treasury shares, value	(10,422)					(10,422)
Dividends declared	(20,029)			(20,029)
Net income	91,923			91,923
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(9,064)				(9,064)
Defined benefit pension and post-retirement plans adjustment	1,598				1,598
Balance at Apr. 30, 2019	$ 1,471,263	$ 12,253	$ 464,915	$ 2,592,955	$ (168,965)	$ (1,429,895)