Non-Controlling and Other Beneficial Interests (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling and other beneficial interests	$ (8,850)	$ (5,459)
Consolidated Sponsored Funds [Member]
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling and other beneficial interests	(7,177)	(2,422)
Majority-owned subsidiaries [Member]
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling and other beneficial interests	$ (1,673)	$ (3,037)