Noncontrolling Interests - Calculation of Noncontrolling Interests Attributable to Group A Units (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Noncontrolling Interest [Line Items]
Net Income (Loss)	$ (23,253)	$ (8,625)	$ (50,193)	$ (15,906)
Net Income (Loss) Attributable to Noncontrolling Interests	(41,860)	(7,984)	(67,945)	(15,218)
Sculptor Capital LP
Noncontrolling Interest [Line Items]
Net Income (Loss)	(100,963)	(18,769)	(142,140)	(50,818)
Sculptor Advisors LP
Noncontrolling Interest [Line Items]
Net Income (Loss)	(9,353)	(9,523)	(19,291)	7,974
Sculptor Advisors II LP
Noncontrolling Interest [Line Items]
Net Income (Loss)	25,712	14,550	16,779	16,603
Sculptor Operating Group
Noncontrolling Interest [Line Items]
Net Income (Loss)	(84,604)	(13,742)	(144,652)	(26,241)
Group A Units
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interests	$ (42,130)	$ (8,148)	$ (67,467)	$ (15,517)
Group A Units | Sculptor Capital LP
Noncontrolling Interest [Line Items]
Blended Participation Percentage	42.00%	43.00%	42.00%	44.00%
Net Income (Loss) Attributable to Noncontrolling Interests	$ (42,031)	$ (8,148)	$ (59,405)	$ (22,212)
Group A Units | Sculptor Advisors LP
Noncontrolling Interest [Line Items]
Blended Participation Percentage	41.00%	0.00%	42.00%	84.00%
Net Income (Loss) Attributable to Noncontrolling Interests	$ (3,869)	$ 0	$ (8,062)	$ 6,695
Group A Units | Sculptor Advisors II LP
Noncontrolling Interest [Line Items]
Blended Participation Percentage	15.00%	0.00%	0.00%	0.00%
Net Income (Loss) Attributable to Noncontrolling Interests	$ 3,770	$ 0	$ 0	$ 0
Group A Units | Sculptor Operating Group
Noncontrolling Interest [Line Items]
Blended Participation Percentage	50.00%	59.00%	47.00%	59.00%
Net Income (Loss) Attributable to Noncontrolling Interests	$ (42,130)	$ (8,148)	$ (67,467)	$ (15,517)