Noncontrolling Interests - Calculation of Noncontrolling Interests Attributable to Group A Units (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Noncontrolling Interest [Line Items]
Net Income (Loss)	$ (26,940)	$ (7,281)
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	(26,085)	(7,234)
Sculptor Capital LP
Noncontrolling Interest [Line Items]
Net Income (Loss)	$ (41,177)	$ (32,049)
Blended Participation Percentage	42.00%	44.00%
Sculptor Advisors LP
Noncontrolling Interest [Line Items]
Net Income (Loss)	$ (9,938)	$ 17,497
Blended Participation Percentage	42.00%	38.00%
Sculptor Advisors II LP
Noncontrolling Interest [Line Items]
Net Income (Loss)	$ (8,933)	$ 2,053
Blended Participation Percentage	42.00%	0.00%
Sculptor Operating Group
Noncontrolling Interest [Line Items]
Net Income (Loss)	$ (60,048)	$ (12,499)
Blended Participation Percentage	42.00%	59.00%
Group A Units
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	$ (25,337)	$ (7,369)
Group A Units | Sculptor Capital LP
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	(17,374)	(14,064)
Group A Units | Sculptor Advisors LP
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	(4,193)	6,695
Group A Units | Sculptor Advisors II LP
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	(3,770)	0
Group A Units | Sculptor Operating Group
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	$ (25,337)	$ (7,369)