CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total		Preferred Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Class A Common Stock Common Stock	Class B Common Stock Common Stock	Class C Common Stock Common Stock	Series A Preferred Stock Retained Earnings	Series B Preferred Stock Retained Earnings	Common Stock	Capital - Common Unitholders	Accumulated Other Comprehensive Income (Loss)	Total Capital - Common Units	Series A Preferred Stock Dividends	Series B Preferred Stock Dividends	Noncontrolling Interests	Preferred Stock
KKR & Co. L.P. Partners' Capital - beginning balance at Dec. 31, 2017		$ 20,052,260												$ 6,722,863	$ (19,481)	$ 6,703,382	$ 332,988	$ 149,566	$ 12,866,324
KKR & Co. L.P. Partners' Capital - beginning balance (in units) at Dec. 31, 2017													486,174,736
Increase (Decrease) in Partners' Capital
Net Income (Loss)		2,161,632												850,483		850,483	11,644	5,038	1,294,467
Other Comprehensive Income (Loss)- Foreign Currency Translation (Net of Tax)		(23,913)													(9,237)	(9,237)			(14,676)
Changes in Consolidation		370,307																	370,307
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units														507,470	(1,998)	505,472			(505,472)
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units (in units)													32,722,098
Tax Effects Resulting from Exchange of KKR Holdings L.P. Units and Other		6,465												6,448	17	6,465
Net Delivery of Common Units - Equity Incentive Plans		(53,439)												(53,439)		(53,439)
Net Delivery of Common Units - Equity Incentive Plans (in units)													7,652,340
Equity-Based and Other Non-Cash Compensation		187,936												125,994		125,994			61,942
Units Repurchases		(52,212)												(52,212)		(52,212)
Unit Repurchases (in units)													(2,207,300)
Capital Contributions		2,410,722																	2,410,722
Capital Distributions	[1]	(1,734,715)												(167,078)		(167,078)	(11,644)	(5,038)	(1,550,955)
KKR & Co. L.P. Partners' Capital - ending balance at Jun. 30, 2018		23,325,043												7,940,529	(30,699)	7,909,830	332,988	149,566	14,932,659
KKR & Co. L.P. Partners' Capital - ending balance (in units) at Jun. 30, 2018													524,341,874
Balance at the beginning of the period at Dec. 31, 2017		610,540
Increase (Decrease) in Redeemable Noncontrolling Interests
Net Income (Loss)		7,658
Capital Contributions		349,451
Capital Distributions	[1]	(5,502)
Balance at the end of the period at Jun. 30, 2018		962,147
Stockholders' equity, ending balance at Jun. 30, 2018				$ 0	$ 0	$ 0	$ (30,699)	$ 0	$ 0	$ 0				$ 7,940,529						$ 482,554
Shares outstanding, ending balance (in shares) at Jun. 30, 2018				0				0	0	0				524,341,874						20,000,000
KKR & Co. L.P. Partners' Capital - beginning balance at Dec. 31, 2017		20,052,260												$ 6,722,863	(19,481)	6,703,382	332,988	149,566	12,866,324
KKR & Co. L.P. Partners' Capital - beginning balance (in units) at Dec. 31, 2017													486,174,736
Increase (Decrease) in Partners' Capital
Other Comprehensive Income (Loss)- Foreign Currency Translation (Net of Tax)		(57,988)
Changes in Consolidation																			370,307
Tax Effects Resulting from Exchange of KKR Holdings L.P. Units and Other		(629)
Capital Contributions																			3,537,037
Capital Distributions																			(2,191,227)
Balance at the beginning of the period at Dec. 31, 2017		610,540
Increase (Decrease) in Redeemable Noncontrolling Interests
Net Income (Loss)		19,894
Capital Contributions		450,330
Capital Distributions		(10,189)
Balance at the end of the period at Sep. 30, 2018		1,070,575
Increase (Decrease) in Stockholders' Equity
Net Income (Loss) Attributable to KKR & Co. Inc.		1,515,704
Stockholders' equity, ending balance at Sep. 30, 2018		9,006,767		$ 482,554	8,005,338	551,036	(40,448)	$ 5,256	$ 0	$ 3,031				$ 0						$ 0
Shares outstanding, ending balance (in shares) at Sep. 30, 2018				20,000,000				525,593,409	1	303,106,993				0						0
KKR & Co. L.P. Partners' Capital - beginning balance at Jun. 30, 2018		23,325,043												$ 7,940,529	$ (30,699)	$ 7,909,830	$ 332,988	$ 149,566	14,932,659
KKR & Co. L.P. Partners' Capital - beginning balance (in units) at Jun. 30, 2018													524,341,874
Increase (Decrease) in Partners' Capital
Other Comprehensive Income (Loss)- Foreign Currency Translation (Net of Tax)		(34,075)					(9,624)
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units					48,844		(145)	$ 25
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units (in units)								2,402,569
Tax Effects Resulting from Exchange of KKR Holdings L.P. Units and Other					(7,114)		20
Capital Contributions																			1,126,315
Capital Distributions																			(640,272)
Balance at the beginning of the period at Jun. 30, 2018		962,147
Increase (Decrease) in Redeemable Noncontrolling Interests
Net Income (Loss)		12,236
Capital Contributions		100,879
Capital Distributions		(4,687)
Balance at the end of the period at Sep. 30, 2018		1,070,575
Stockholders' equity, beginning balance at Jun. 30, 2018				$ 0	0	0	(30,699)	$ 0	$ 0	$ 0				$ 7,940,529						$ 482,554
Shares outstanding, beginning balance (in shares) at Jun. 30, 2018				0				0	0	0				524,341,874						20,000,000
Increase (Decrease) in Stockholders' Equity
Reclassifications resulting from the Conversion				$ 482,554	7,932,245			$ 5,243	$ 0	$ 3,041				$ (7,940,529)						$ (482,554)
Reclassifications resulting from the Conversion (in shares)				20,000,000				524,341,874	1	304,107,762				(524,341,874)						(20,000,000)
Repurchases of Class A Common Stock					(28,438)			$ (12)
Repurchases of Class A Common Stock (in shares)								(1,151,034)
Cancellation of Class C Common Stock										$ (10)
Cancellation of Class C Common Stock (in shares)										(1,000,769)
Equity-Based Compensation					59,801
Net Income (Loss) Attributable to KKR & Co. Inc.		648,539				648,539
Preferred Stock Dividends						(8,341)
Common Stock Dividends						(89,162)
Stockholders' equity, ending balance at Sep. 30, 2018		9,006,767		$ 482,554	8,005,338	551,036	(40,448)	$ 5,256	$ 0	$ 3,031				$ 0						$ 0
Shares outstanding, ending balance (in shares) at Sep. 30, 2018				20,000,000				525,593,409	1	303,106,993				0						0
Increase (Decrease) in Stockholders' Equity
Noncontrolling Interests (See Note 15 Equity)		16,062,569
Total Equity		25,069,336
Noncontrolling Interests (See Note 15 Equity)	[2]	15,610,358
Total Equity	[2]	24,259,968
Other Comprehensive Income (Loss)- Foreign Currency Translation (Net of Tax)		(20,720)					(11,109)
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units					59,353		(339)	$ 33
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units (in units)								3,335,092
Tax Effects Resulting from Exchange of KKR Holdings L.P. Units and Other		7,776			7,776
Equity-Based and Other Non-Cash Compensation					(53,479)			$ 65
Capital Contributions																			3,364,097
Capital Distributions																			(2,350,628)
Balance at the beginning of the period at Dec. 31, 2018		1,122,641
Increase (Decrease) in Redeemable Noncontrolling Interests
Net Income (Loss)		0
Balance at the end of the period at Sep. 30, 2019		0
Stockholders' equity, beginning balance at Dec. 31, 2018		8,649,610	[2]	$ 482,554	8,106,408	91,953	(39,645)	$ 5,349	$ 0	$ 2,991
Shares outstanding, beginning balance (in shares) at Dec. 31, 2018				20,000,000				534,857,237	1	299,081,239
Increase (Decrease) in Stockholders' Equity
Repurchases of Class A Common Stock					(28,552)			$ (14)
Repurchases of Class A Common Stock (in shares)								(1,370,289)
Net Delivery of Class A Common Stock (in shares)								6,516,929
Class A Common Stock Issued in Connection with the Purchase of an Investment					82,642			$ 35
Class A Common Stock Issued in Connection with the Purchase of an Investment (in shares)								3,500,000
Cancellation of Class C Common Stock										$ (33)
Cancellation of Class C Common Stock (in shares)										(3,335,092)
Equity-Based Compensation					157,891
Net Income (Loss) Attributable to KKR & Co. Inc.		1,481,607				1,481,607
Preferred Stock Dividends											$ (17,466)	$ (7,557)
Common Stock Dividends						(202,709)
Stockholders' equity, ending balance at Sep. 30, 2019		10,117,754	[2]	$ 482,554	8,332,039	1,345,828	(51,093)	$ 5,468	$ 0	$ 2,958
Shares outstanding, ending balance (in shares) at Sep. 30, 2019				20,000,000				546,838,969	1	295,746,147
Increase (Decrease) in Partners' Capital
Other Comprehensive Income (Loss)- Foreign Currency Translation (Net of Tax)		(21,047)					(10,689)
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units					22,367		(130)	$ 12
Exchange of KKR Holdings L.P. Units and Other Securities to KKR & Co. L.P. Common Units (in units)								1,215,449
Tax Effects Resulting from Exchange of KKR Holdings L.P. Units and Other					3,259
Equity-Based and Other Non-Cash Compensation					0			$ 0
Capital Contributions																			713,189
Capital Distributions																			$ (729,333)
Balance at the beginning of the period at Jun. 30, 2019		0
Increase (Decrease) in Redeemable Noncontrolling Interests
Net Income (Loss)		0
Balance at the end of the period at Sep. 30, 2019		0
Stockholders' equity, beginning balance at Jun. 30, 2019				$ 482,554	8,252,018	1,172,754	(40,274)	$ 5,456	$ 0	$ 2,970
Shares outstanding, beginning balance (in shares) at Jun. 30, 2019				20,000,000				545,623,520	1	296,961,596
Increase (Decrease) in Stockholders' Equity
Repurchases of Class A Common Stock					0			$ 0
Repurchases of Class A Common Stock (in shares)								0
Net Delivery of Class A Common Stock (in shares)								0
Class A Common Stock Issued in Connection with the Purchase of an Investment					0			$ 0
Class A Common Stock Issued in Connection with the Purchase of an Investment (in shares)								0
Cancellation of Class C Common Stock										$ (12)
Cancellation of Class C Common Stock (in shares)										(1,215,449)
Equity-Based Compensation					54,395
Net Income (Loss) Attributable to KKR & Co. Inc.		249,554				249,554
Preferred Stock Dividends											$ (5,822)	$ (2,519)
Common Stock Dividends						(68,139)
Stockholders' equity, ending balance at Sep. 30, 2019		10,117,754	[2]	$ 482,554	$ 8,332,039	$ 1,345,828	$ (51,093)	$ 5,468	$ 0	$ 2,958
Shares outstanding, ending balance (in shares) at Sep. 30, 2019				20,000,000				546,838,969	1	295,746,147
Increase (Decrease) in Stockholders' Equity
Noncontrolling Interests (See Note 15 Equity)	[2]	18,467,443
Total Equity	[2]	$ 28,585,197

[1] $0.34 per common unit, $0.843750 per Series A preferred unit, and $0.812500 per Series B preferred unit.

[2] See Note 1 "Organization."