CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Fees and Other	$ 491,503	$ 355,418	$ 1,299,743	$ 1,116,382
Capital Allocation-Based Income	638,163	394,234	1,274,149	1,416,825
Total Revenues	1,129,666	749,652	2,573,892	2,533,207
Expenses
Compensation and Benefits	560,434	368,513	1,331,070	1,234,317
Occupancy and Related Charges	15,250	15,267	44,787	44,150
General, Administrative and Other	164,406	146,467	475,884	421,522
Total Expenses	740,090	530,247	1,851,741	1,699,989
Investment Income (Loss)
Net Gains (Losses) from Investment Activities	666,731	52,004	2,256,118	893,065
Dividend Income	38,245	20,774	137,653	100,144
Interest Income	339,393	317,134	989,354	893,832
Interest Expense	(211,081)	(211,959)	(634,521)	(597,403)
Total Investment Income (Loss)	833,288	177,953	2,748,604	1,289,638
Income (Loss) Before Taxes	1,222,864	397,358	3,470,755	2,122,856
Income Tax Expense (Benefit)	(129,405)	18,420	(50,804)	77,500
Net Income (Loss)	1,352,269	378,938	3,521,559	2,045,356
Net Income (Loss) Attributable to Redeemable Noncontrolling Interests	12,236	20,876	19,894	64,196
Net Income (Loss) Attributable to Noncontrolling Interests	691,494	196,158	1,985,961	1,137,585
Net Income (Loss) Attributable to KKR & Co. Inc.	648,539	161,904	1,515,704	843,575
Preferred Dividends	8,341	8,341	25,023	25,023
Net Income (Loss) Attributable to KKR & Co. Inc. Class A Common Stockholders	640,198	153,563	1,490,681	818,552
Series A Preferred Units/Preferred Stock
Investment Income (Loss)
Preferred Dividends	5,822	5,822	17,466	17,466
Series B Preferred Units/Preferred Stock
Investment Income (Loss)
Preferred Dividends	2,519	2,519	7,557	7,557
Class A Common Stock
Investment Income (Loss)
Net Income (Loss) Attributable to KKR & Co. Inc. Class A Common Stockholders	$ 640,198	$ 153,563	$ 1,490,681	$ 818,552
Net Income (Loss) Attributable to KKR & Co. Inc. Per Share of Class A Common Stock
Basic (in dollars per share)	$ 1.22	$ 0.33	$ 2.94	$ 1.76
Diluted (in dollars per share)	$ 1.17	$ 0.30	$ 2.83	$ 1.63
Weighted Average Shares of Class A Common Stock Outstanding
Basic (in shares)	525,240,214	471,758,886	507,981,387	463,941,084
Diluted (in shares)	545,672,953	506,873,177	528,466,390	501,615,635