UNITHOLDERS' CAPITAL - Additional Information (Detail) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended												12 Months Ended
	Mar. 10, 2014 USD ($) shares	Mar. 31, 2015 USD ($) shares	May. 31, 2013 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2015 $ / shares	Jun. 30, 2015 $ / shares	Mar. 31, 2015 $ / shares	Dec. 31, 2014 USD ($) $ / shares shares	Sep. 30, 2014 $ / shares	Jun. 30, 2014 $ / shares	Mar. 31, 2014 $ / shares	Dec. 31, 2013 USD ($) $ / shares shares	Sep. 30, 2013 $ / shares	Jun. 30, 2013 $ / shares	Mar. 31, 2013 $ / shares	Dec. 31, 2015 USD ($) day $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	Nov. 30, 2015 shares	Dec. 31, 2012 USD ($) shares
Class of Stock [Line Items]
Total unitholders’ capital				$ 1,808,094				$ 1,840,130				$ 1,708,378				$ 1,808,094	$ 1,840,130	$ 1,708,378		$ 1,393,893
Non-controlling interests in consolidated funds				$ 1,043,930				$ 1,265,961								1,043,930	1,265,961
Proceeds from issuance of Class A units																$ 237,820	$ 296,650	$ 419,908
OCGH Units
Class of Stock [Line Items]
Shares authorized for conversion | shares																			12,998,725
Class A Units
Class of Stock [Line Items]
Unitholders' capital (in shares) | shares				61,970,000				43,764,000				38,473,000				61,970,000	43,764,000	38,473,000		30,181,000
Lock-up period (in years)																3 years
Number of business days after earnings release | day																2
Shares eligible for sale | shares																			1,100,000
Distribution Per Unit (in dollars per share) | $ / shares				$ 0.40	$ 0.5	$ 0.64	$ 0.56	$ 0.62	$ 0.55	$ 0.98	$ 1.00	$ 0.74	$ 1.51	$ 1.41	$ 1.05	$ 2.1	$ 3.15	$ 4.71
Issuance of units (in shares) | shares	5,000,000	4,600,000,000	8,050,000.00													18,231,000	5,291,000	8,292,000
Proceeds from issuance of Class A units	$ 296,700	$ 237,800	$ 419,900
Share price (in dollars per share) | $ / shares			$ 53.50
OCGH
Class of Stock [Line Items]
Unitholders' capital (in shares) | shares				91,937,873				109,088,901								91,937,873	109,088,901
Total unitholders’ capital				$ 941,141				$ 1,170,893								$ 941,141	$ 1,170,893
Oaktree Operating Group
Class of Stock [Line Items]
Subsidiary units outstanding (in shares) | shares				153,907,733				152,852,620								153,907,733	152,852,620
Total unitholders’ capital				$ 1,575,504				$ 1,640,594								$ 1,575,504	$ 1,640,594
Equity Held by Third Parties
Class of Stock [Line Items]
Non-controlling interests in consolidated funds				$ 102,789				$ 95,068								$ 102,789	$ 95,068