CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) - USD ($)		Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and Cash Equivalents		$ 2,264,875,000	$ 1,876,687,000
Cash and Cash Equivalents Held at Consolidated Entities		963,777,000	1,802,372,000
Restricted Cash and Cash Equivalents		65,949,000	56,302,000
Investments		44,119,593,000	39,013,934,000
Due from Affiliates		682,007,000	554,349,000
Other Assets		2,247,747,000	2,531,075,000
Total Assets		50,343,948,000	45,834,719,000
Liabilities and Equity
Debt Obligations		20,266,172,000	21,193,859,000
Due to Affiliates		252,547,000	323,810,000
Accounts Payable, Accrued Expenses and Other Liabilities		3,685,318,000	3,654,250,000
Total Liabilities		24,204,037,000	25,171,919,000
Commitments and Contingencies
Redeemable Noncontrolling Interests		1,070,575,000	610,540,000
Stockholders' Equity
KKR & Co. L.P. Capital - Common Unitholders (486,174,736 common units issued and outstanding as of December 31, 2017)	[1]	0	6,722,863,000
Preferred Units (20,000,000 units issued and outstanding as of December 31, 2017)	[1]	0	482,554,000
Preferred Stock (20,000,000 shares issued and outstanding as of September 30, 2018)	[1]	482,554,000	0
Additional Paid-In Capital	[1]	8,005,338,000	0
Retained Earnings	[1]	551,036,000	0
Accumulated Other Comprehensive Income (Loss)	[1]	(40,448,000)	(19,481,000)
Total KKR & Co. Inc. Stockholders' Equity	[1]	9,006,767,000	7,185,936,000
Noncontrolling Interests	[1]	16,062,569,000	12,866,324,000
Total Equity	[1]	25,069,336,000	20,052,260,000
Total Liabilities and Equity		50,343,948,000	45,834,719,000
Consolidated VIEs
Assets
Cash and Cash Equivalents Held at Consolidated Entities		766,765,000	1,699,252,000
Restricted Cash and Cash Equivalents		43,486,000	21,255,000
Investments		28,217,811,000	24,982,170,000
Due from Affiliates		5,939,000	23,562,000
Other Assets		313,774,000	344,575,000
Total Assets		29,347,775,000	27,070,814,000
Liabilities and Equity
Debt Obligations		13,366,330,000	16,356,566,000
Accounts Payable, Accrued Expenses and Other Liabilities		775,631,000	1,167,154,000
Total Liabilities		14,141,961,000	17,523,720,000
Consolidated VIEs | Consolidated CFEs
Assets
Cash and Cash Equivalents Held at Consolidated Entities		437,299,000	1,467,829,000
Restricted Cash and Cash Equivalents		0	0
Investments		13,293,505,000	15,573,203,000
Due from Affiliates		0	0
Other Assets		136,909,000	176,572,000
Total Assets		13,867,713,000	17,217,604,000
Liabilities and Equity
Debt Obligations		12,645,610,000	15,586,216,000
Accounts Payable, Accrued Expenses and Other Liabilities		601,853,000	923,494,000
Total Liabilities		13,247,463,000	16,509,710,000
Consolidated VIEs | Consolidated KKR Funds and Other Entities
Assets
Cash and Cash Equivalents Held at Consolidated Entities		329,466,000	231,423,000
Restricted Cash and Cash Equivalents		43,486,000	21,255,000
Investments		14,924,306,000	9,408,967,000
Due from Affiliates		5,939,000	23,562,000
Other Assets		176,865,000	168,003,000
Total Assets		15,480,062,000	9,853,210,000
Liabilities and Equity
Debt Obligations		720,720,000	770,350,000
Accounts Payable, Accrued Expenses and Other Liabilities		173,778,000	243,660,000
Total Liabilities		894,498,000	1,014,010,000
Class A Common Stock
Stockholders' Equity
Common Stock	[1]	5,256,000	0
Class B Common Stock
Stockholders' Equity
Common Stock	[1]	0	0
Class C Common Stock
Stockholders' Equity
Common Stock	[1]	$ 3,031,000	$ 0

[1] See Note 1 "Organization."