Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 28,056	$ 113,130	$ 140,891	$ 205,390
Other comprehensive loss:
Amortization of net losses on cash flow hedges, net of tax	(25)	(26)	(49)	(50)
Foreign currency translation adjustments	(10,199)	(5,656)	(10,559)	(4,670)
Other comprehensive loss, net of tax	(10,224)	(5,682)	(10,608)	(4,720)
Total comprehensive income	17,832	107,448	130,283	200,670
Comprehensive (income) loss attributable to non-controlling and other beneficial interests	44,002	(11,323)	35,152	(16,782)
Total comprehensive income attributable to Eaton Vance Corp. shareholders	$ 61,834	$ 96,125	$ 165,435	$ 183,888