| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | S-1/A |
| CASH FLOWS FROM OPERATING ACTIVITIES | | | | | | | | |
| Net income | 130.8 | 42.4 | -256.1 | -158.2 | -52.3 | -6.2 | -31.3 | |
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| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Depreciation and depletion expense | 50.1 | 36.8 | 48.0 | 52.1 | 25.2 | 1.6 | 4.0 | |
| Amortization of loan origination costs | 1.9 | 1.6 | 1.1 | 1.1 | 0.5 | 0.0 | 0.0 | |
| Loss on extinguishment of debt | | | 0.5 | | | | | |
| Equity income in affiliate | -2.7 | -1.1 | -0.8 | -0.1 | | | | |
| Cash distribution from affiliate | 3.8 | 1.0 | 0.8 | | | | | |
| Unit-based compensation | 11.1 | 10.6 | 9.3 | 7.5 | 3.2 | 0.6 | 0.6 | |
| (Gain) loss on derivative instruments, net of settlements | -14.3 | 20.3 | 7.1 | 3.4 | -4.5 | | | |
| Changes in operating assets and liabilities: | | | | | | | | |
| Oil, natural gas and NGL receivables | -11.8 | -17.6 | 1.6 | 4.4 | -7.0 | -0.1 | 0.5 | |
| Accounts receivable and other current assets | -0.5 | -2.1 | -0.9 | 0.0 | 0.2 | 1.0 | -1.4 | |
| Accounts payable | 0.4 | -0.1 | -0.3 | -0.1 | 1.0 | -1.0 | 1.6 | |
| Other current liabilities | 1.6 | -0.5 | 0.5 | 1.8 | -0.3 | 0.1 | 0.0 | |
| Operating lease liabilities | -0.3 | -0.3 | -0.3 | -0.4 | | | | |
| Interest earned on marketable securities in trust account | | | | | | | | |
| Other assets and liabilities | | | | | | | | |
| Net cash provided by operating activities | 166.6 | 91.4 | 62.2 | 80.7 | 33.2 | 1.1 | 2.7 | |
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| CASH FLOWS FROM INVESTING ACTIVITIES | | | | | | | | |
| Purchases of property and equipment | -0.2 | -0.8 | -1.0 | -1.0 | -0.4 | | | |
| Purchase of oil and natural gas properties | -141.3 | -55.3 | -87.6 | -11.7 | -211.1 | -0.1 | -0.5 | |
| Cash distribution from affiliate | 3.6 | 0.5 | | 0.1 | | | | |
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| Cash received from investments held in trust | | | | | | | | |
| Cash paid for transaction costs | | | | | | | | |
| Investment in marketable securities | | | | | | | | |
| Net cash provided by (used in) investing activities | -374.7 | -55.6 | -90.8 | -15.6 | -200.9 | -0.1 | -0.5 | |
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| CASH FLOWS FROM FINANCING ACTIVITIES | | | | | | | | |
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| Payment of underwriting commissions with equity offering of Kimbell Tiger Operating Company, net of adjustments | | | | | | | | |
| Redemption of Class B contributions on converted units | -0.5 | -0.2 | -0.4 | -0.3 | | | | |
| Distributions to common unitholders | -107.4 | -47.3 | -29.5 | -35.4 | -38.3 | | | |
| Distribution to OpCo unitholders | -19.3 | -21.5 | -20.5 | -35.7 | | | | |
| Distribution on Class B units | 0.0 | -0.1 | -0.1 | -0.1 | 0.0 | | | |
| Borrowings on long-term debt | 199.2 | 136.6 | 162.6 | 12.8 | 124.3 | | 3.1 | |
| Repayments on long-term debt | -183.3 | -91.0 | -91.2 | | -67.9 | -0.9 | -0.6 | |
| Payment of loan origination costs | -0.7 | -0.7 | -4.5 | -0.1 | -3.4 | 0.0 | | |
| Restricted units repurchased for tax withholding | -3.3 | -2.1 | | | | | | |
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| Proceeds from initial public offering of Kimbell Tiger Operating Company | | | | | | | | |
| Redemption of Kimbell Tiger Acquisition Corporation equity units | | | | | | | | |
| Net cash (used in) provided by financing activities | 226.1 | -38.6 | 24.2 | -66.7 | 177.9 | -0.9 | -2.1 | |
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| Supplemental cash flow information: | | | | | | | | |
| Cash paid for interest | 11.2 | 7.5 | 5.3 | 5.2 | 3.3 | 0.4 | 0.3 | |
| Cash paid for taxes | 3.1 | | | 0.8 | | 0.0 | 0.0 | |
| Non-cash investing and financing activities: | | | | | | | | |
| Recognition of tenant improvement asset | 0.1 | 0.4 | | | | | | |
| Reduction of deferred underwriting commission associated with redemption of Kimbell Tiger Acquisition Corporation equity units | | | | | | | | |
| Deferred underwriting commissions | | | | | | | | |