CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 1,352,269	$ 378,938	$ 3,521,559	$ 2,045,356
Other Comprehensive Income (Loss), Net of Tax:
Foreign Currency Translation Adjustments	(34,075)	10,001	(57,988)	47,097
Comprehensive Income (Loss)	1,318,194	388,939	3,463,571	2,092,453
Less: Comprehensive Income (Loss) Attributable to Redeemable Noncontrolling Interests	12,236	20,876	19,894	64,196
Less: Comprehensive Income (Loss) Attributable to Noncontrolling Interests	667,043	199,904	1,946,834	1,161,651
Comprehensive Income (Loss) Attributable to KKR & Co. Inc.	$ 638,915	$ 168,159	$ 1,496,843	$ 866,606