CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities
Net Income (Loss)	$ 3,521,559	$ 2,045,356
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided (Used) by Operating Activities:
Equity-Based and Other Non-Cash Compensation	263,230	271,226
Net Realized (Gains) Losses on Investments	(426,220)	2,662
Change in Unrealized (Gains) Losses on Investments	(1,829,898)	(895,727)
Capital Allocation-Based Income	(1,274,149)	(1,416,825)
Other Non-Cash Amounts	(29,739)	15,534
Cash Flows Due to Changes in Operating Assets and Liabilities:
Change in Consolidation and Other	0	(2,244)
Change in Due from / to Affiliates	(216,665)	(230,948)
Change in Other Assets	205,210	(66,260)
Change in Accounts Payable, Accrued Expenses and Other Liabilities	731,510	1,176,047
Investments Purchased	(26,806,751)	(29,464,933)
Proceeds from Investments	20,621,866	25,981,898
Net Cash Provided (Used) by Operating Activities	(5,240,047)	(2,584,214)
Investing Activities
Purchases of Fixed Assets	(69,954)	(70,849)
Development of Oil and Natural Gas Properties	0	(1,041)
Proceeds from Sale of Oil and Natural Gas Properties	26,630	0
Net Cash Provided (Used) by Investing Activities	(43,324)	(71,890)
Financing Activities
Preferred Stock Dividends	(25,023)	(25,023)
Common Stock Dividends	(256,240)	(230,785)
Distributions to Redeemable Noncontrolling Interests	(10,189)	(525)
Contributions from Redeemable Noncontrolling Interests	450,330	189,172
Distributions to Noncontrolling Interests	(2,191,227)	(1,610,880)
Contributions from Noncontrolling Interests	3,537,037	2,482,649
Proceeds from Debt Obligations	11,429,320	8,848,735
Repayment of Debt Obligations	(7,893,904)	(7,557,245)
Financing Costs Paid	(36,572)	(8,550)
Net Cash Provided (Used) by Financing Activities	4,869,431	2,050,244
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(26,820)	70,521
Net Increase/(Decrease) in Cash, Cash Equivalents and Restricted Cash	(440,760)	(535,339)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	3,735,361	4,345,815
Cash, Cash Equivalents and Restricted Cash, End of Period	3,294,601	3,810,476
Supplemental Disclosures of Cash Flow Information
Payments for Interest	582,148	577,428
Payments for Income Taxes	48,891	34,633
Supplemental Disclosures of Non-Cash Investing and Financing Activities
Equity-Based and Other Non-Cash Contributions	273,274	277,704
Non-Cash Contributions from Noncontrolling Interests	0	4,199
Debt Obligations - Net Gains (Losses), Translation and Other	378,291	(460,740)
Tax Effects Resulting from Exchange of KKR Holdings L.P. Units and delivery of Class A Common Stock	(629)	(7,595)
Gain on Sale of Oil and Natural Gas Properties	15,224	0
Change in Consolidation and Other
Investments	(3,054,090)	(174,906)
Due From Affiliates	0	(3,536)
Other Assets	(114,770)	(298,097)
Debt Obligations	(4,049,685)	0
Accounts Payable, Accrued Expenses and Other Liabilities	197,874	(114,573)
Noncontrolling Interests	370,307	(71,657)
Redeemable Noncontrolling Interests	0	(315,057)
Gain on Asset Contribution	312,644	0
Reconciliation to the Condensed Consolidated Statements of Financial Condition
Cash, Cash Equivalents and Restricted Cash, End of Period	3,735,361	4,345,815
Class A Common Stock
Financing Activities
Net Delivery of Class A Common Stock (Equity Incentive Plan)	(53,439)	(37,304)
Repurchases of Class A Common Stock	$ (80,662)	$ 0