Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 113,130	$ 96,406	$ 205,390	$ 184,917
Other comprehensive income (loss):
Amortization of net losses on cash flow hedges, net of tax	(26)	(25)	(50)	(50)
Unrealized gains on available-for-sale investments, net of tax	0	312	0	1,032
Foreign currency translation adjustments	(5,656)	(10,066)	(4,670)	2,019
Other comprehensive income (loss), net of tax	(5,682)	(9,779)	(4,720)	3,001
Total comprehensive income	107,448	86,627	200,670	187,918
Comprehensive (income) loss attributable to non-controlling and other beneficial interests	(11,323)	195	(16,782)	(10,260)
Total comprehensive income attributable to Eaton Vance Corp. shareholders	$ 96,125	$ 86,822	$ 183,888	$ 177,658