| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenues | ||||||||||||||||
| Fees and Other | ||||||||||||||||
| Capital Allocation-Based Income (Loss) | ||||||||||||||||
| Net Premiums | ||||||||||||||||
| Policy Fees | ||||||||||||||||
| Net Investment Income | ||||||||||||||||
| Net Investment-Related Gains (Losses) | ||||||||||||||||
| Other Income | ||||||||||||||||
| Total Revenues | ||||||||||||||||
| YoY growth | +12.5% | +38.8% | +76.1% | +15.3% | ||||||||||||
| Expenses | ||||||||||||||||
| Compensation and Benefits | ||||||||||||||||
| Occupancy and Related Charges | ||||||||||||||||
| General, Administrative and Other | — | — | ||||||||||||||
| Net Policy Benefits and Claims (including market risk benefit (gain) loss) | ||||||||||||||||
| Amortization of Policy Acquisition Costs | ||||||||||||||||
| Interest Expense | ||||||||||||||||
| Policy and Other Operating Expense | — | — | ||||||||||||||
| Total Expenses | ||||||||||||||||
| Investment Income (Loss) - Asset Management and Strategic Holdings | ||||||||||||||||
| Net Gains (Losses) from Investment Activities | ||||||||||||||||
| Dividend Income | ||||||||||||||||
| Interest Income | ||||||||||||||||
| Interest Expense | ||||||||||||||||
| Total Investment Income (Loss) | ||||||||||||||||
| Income (Loss) Before Taxes | ||||||||||||||||
| Income Tax Expense (Benefit) | ||||||||||||||||
| Net Income (Loss) | ||||||||||||||||
| % of revenue | 19.7% | 6.4% | 39.5% | 33.3% | ||||||||||||
| Net Income (Loss) Attributable to Redeemable Noncontrolling Interests | ||||||||||||||||
| Net Income (Loss) Attributable to Noncontrolling Interests | ||||||||||||||||
| Net Income (Loss) Attributable to KKR & Co. Inc. | ||||||||||||||||
| % of revenue | 12.2% | 9.4% | 20.0% | 16.3% | ||||||||||||
| Series D Mandatory Convertible Preferred Stock Dividends | ||||||||||||||||
| Net Income (Loss) Attributable to KKR & Co. Inc. Common Stockholders | ||||||||||||||||
| Net Income (Loss) Attributable to KKR & Co. Inc. Per Share of Common Stock | ||||||||||||||||
| Basic (in dollars per share) | ||||||||||||||||
| Diluted (in dollars per share) |