EQUITY AND REDEEMABLE INTEREST - Common Stock (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Feb. 28, 2022	Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity
Beginning balance (in shares)	290,451,548
Stock option exercises, net of shares withheld for tax (in shares)	176,154
Vesting of restricted stock awards, net of shares withheld for tax (in shares)	2,793,427
Ending balance (in shares)	293,416,994
Ares Operating Group
Increase (Decrease) in Stockholders' Equity
Exchanges of AOG units (in shares)	0
Cancellation of AOG Units (in shares)	(4,135)
Class A Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Authorized amount		$ 150,000,000
Increase (Decrease) in Stockholders' Equity
Beginning balance (in shares)	168,351,305
Stock option exercises, net of shares withheld for tax (in shares)	176,154
Vesting of restricted stock awards, net of shares withheld for tax (in shares)	2,793,427
Ending balance (in shares)	171,461,115
Class A Common Stock | Ares Operating Group
Increase (Decrease) in Stockholders' Equity
Exchanges of AOG units (in shares)	140,229
Cancellation of AOG Units (in shares)	0
Non- voting Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		0.01
Increase (Decrease) in Stockholders' Equity
Beginning balance (in shares)	3,489,911
Stock option exercises, net of shares withheld for tax (in shares)	0
Vesting of restricted stock awards, net of shares withheld for tax (in shares)	0
Ending balance (in shares)	3,489,911
Non- voting Common Stock | Ares Operating Group
Increase (Decrease) in Stockholders' Equity
Exchanges of AOG units (in shares)	0
Cancellation of AOG Units (in shares)	0
Class B Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		0.01
Increase (Decrease) in Stockholders' Equity
Beginning balance (in shares)	1,000
Stock option exercises, net of shares withheld for tax (in shares)	0
Vesting of restricted stock awards, net of shares withheld for tax (in shares)	0
Ending balance (in shares)	1,000
Class B Common Stock | Ares Operating Group
Increase (Decrease) in Stockholders' Equity
Exchanges of AOG units (in shares)	0
Cancellation of AOG Units (in shares)	0
Class C Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Increase (Decrease) in Stockholders' Equity
Beginning balance (in shares)	118,609,332
Stock option exercises, net of shares withheld for tax (in shares)	0
Vesting of restricted stock awards, net of shares withheld for tax (in shares)	0
Ending balance (in shares)	118,464,968
Class C Common Stock | Ares Operating Group
Increase (Decrease) in Stockholders' Equity
Exchanges of AOG units (in shares)	(140,229)
Cancellation of AOG Units (in shares)	(4,135)