EQUITY - Net Income (Loss) Attributable To Noncontrolling Interests Held by KKR Holdings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Income (Loss)	$ 1,627,046	$ 602,894
Less: Net Income (Loss) Attributable to Redeemable Noncontrolling Interests	0	25,674
Less: Net income (loss) attributable to Noncontrolling Interests in consolidated entities	436,359	277,775
Less: Preferred Stock Dividends	8,341	8,341
Plus: Income tax expense (benefit) attributable to KKR & Co. Inc.	158,962	6,068
Net income (loss) attributable to KKR & Co. L.P. Common Unitholders and KKR Holdings	1,341,308	297,172
KKR Holdings
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net income (loss) attributable to noncontrolling interests	$ 481,368	$ 121,002