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N-2 - $ / shares | 3 Months Ended
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Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022
Cover [Abstract] |  |  |  |  |  |  |  |  |
Entity Central Index Key | 0001287750 |  |  |  |  |  |  |  |
Amendment Flag | false |  |  |  |  |  |  |  |
Securities Act File Number | 814-00663 |  |  |  |  |  |  |  |
Document Type | 10-Q |  |  |  |  |  |  |  |
Entity Registrant Name | ARES CAPITAL CORPORATION |  |  |  |  |  |  |  |
Entity Address, Address Line One | 245 Park Avenue |  |  |  |  |  |  |  |
Entity Address, Address Line Two | 44th Floor |  |  |  |  |  |  |  |
Entity Address, City or Town | New York |  |  |  |  |  |  |  |
Entity Address, State or Province | NY |  |  |  |  |  |  |  |
Entity Address, Postal Zip Code | 10167 |  |  |  |  |  |  |  |
City Area Code | 212 |  |  |  |  |  |  |  |
Local Phone Number | 750-7300 |  |  |  |  |  |  |  |
Entity Emerging Growth Company | false |  |  |  |  |  |  |  |
General Description of Registrant [Abstract] |  |  |  |  |  |  |  |  |
Investment Objectives and Practices [Text Block] | Our investment objective is to generate both current income and capital appreciation through debt and equity investments. We invest primarily in first lien senior secured loans (including “unitranche” loans, which are loans that combine both senior and subordinated debt, generally in a first lien position) and second lien senior secured loans. In addition to senior secured loans, we also invest in subordinated loans (sometimes referred to as mezzanine debt), which in some cases includes an equity component and preferred equity. To a lesser extent, we also make common equity investments, which have generally been non-control equity investments of less than $20 million (usually in conjunction with a concurrent debt investment). However, we may increase the size or change the nature of these investments. |  |  |  |  |  |  |  |
Risk Factors [Table Text Block] | Risk Factors In addition to the other information set forth in this report, you should carefully consider the risk factors described in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which could materially affect our business, financial condition and/or operating results. The risks described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition and/or operating results. |  |  |  |  |  |  |  |
Share Price [Table Text Block] | Price Range of Common Stock The following table sets forth, for the first quarter of the year ending December 31, 2024 and each fiscal quarter for the fiscal years ended December 31, 2023 and 2022, the net asset value per share of our common stock, the range of high and low closing sales prices of our common stock, the closing sales price as a premium (discount) to net asset value and the dividends or distributions declared by us. On April 24, 2024, the last reported closing sales price of our common stock on the NASDAQ Global Select Market was $20.79 per share, which represented a premium of approximately 6.45% to the net asset value per share reported by us as of March 31, 2024.
| Net Asset |  | Price Range |  | High Sales Price Premium (Discount) to Net Asset |  | Low Sales Price Premium (Discount) to Net Asset |  | Cash Dividend Per |
| Value(1) |  | High |  | Low |  | Value(2) |  | Value(2) |  | Share(3) |
Year ended December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
First Quarter | $ | 19.03 |  |  | $ | 22.58 |  |  | $ | 19.70 |  |  | 18.65 | % |  | 3.52 | % |  | $ | 0.54 |  | (4)
Second Quarter | $ | 18.81 |  |  | $ | 22.44 |  |  | $ | 17.12 |  |  | 19.30 | % |  | (8.98) | % |  | $ | 0.42 |  |
Third Quarter | $ | 18.56 |  |  | $ | 20.70 |  |  | $ | 16.84 |  |  | 11.53 | % |  | (9.27) | % |  | $ | 0.43 |  |
Fourth Quarter | $ | 18.40 |  |  | $ | 19.76 |  |  | $ | 17.30 |  |  | 7.39 | % |  | (5.98) | % |  | $ | 0.48 |  |
Year ended December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
First Quarter | $ | 18.45 |  |  | $ | 20.04 |  |  | $ | 17.19 |  |  | 8.62 | % |  | (6.83) | % |  | $ | 0.48 |  |
Second Quarter | $ | 18.58 |  |  | $ | 19.11 |  |  | $ | 17.65 |  |  | 2.85 | % |  | (5.01) | % |  | $ | 0.48 |  |
Third Quarter | $ | 18.99 |  |  | $ | 19.81 |  |  | $ | 18.86 |  |  | 4.32 | % |  | (0.68) | % |  | $ | 0.48 |  |
Fourth Quarter | $ | 19.24 |  |  | $ | 20.21 |  |  | $ | 18.66 |  |  | 5.04 | % |  | (3.01) | % |  | $ | 0.48 |  |
Year ended December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |
First Quarter | $ | 19.53 |  |  | $ | 20.82 |  |  | $ | 19.94 |  |  | 6.61 | % |  | 2.10 | % |  | $ | 0.48 |  |
_______________________________________________________________________________ (1)Net asset value per share is determined as of the last day in the relevant quarter and therefore may not reflect the net asset value per share on the date of the high and low closing sales prices. The net asset values shown are based on outstanding shares at the end of the relevant quarter. (2)Calculated as the respective high or low closing sales price less net asset value, divided by net asset value (in each case, as of the applicable quarter). (3)Represents the dividend or distribution declared in the relevant quarter. (4)Consists of a quarterly dividend of $0.42 per share and additional quarterly dividends totaling $0.12 per share, all of which were declared in the first quarter of 2022 and paid on March 31, 2022, June 30, 2022, September 30, 2022 and December 29, 2022. |  |  |  |  |  |  |  |
Lowest Price or Bid | $ 19.94 | $ 18.66 | $ 18.86 | $ 17.65 | $ 17.19 | $ 17.30 | $ 16.84 | $ 17.12 | $ 19.70
Highest Price or Bid | $ 20.82 | $ 20.21 | $ 19.81 | $ 19.11 | $ 20.04 | $ 19.76 | $ 20.70 | $ 22.44 | $ 22.58
Highest Price or Bid, Premium (Discount) to NAV [Percent] | 6.61% | 5.04% | 4.32% | 2.85% | 8.62% | 7.39% | 11.53% | 19.30% | 18.65%
Lowest Price or Bid, Premium (Discount) to NAV [Percent] | 2.10% | (3.01%) | (0.68%) | (5.01%) | (6.83%) | (5.98%) | (9.27%) | (8.98%) | 3.52%
NAV Per Share | $ 19.53 | $ 19.24 |  |  | $ 18.45 | $ 18.40 |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt [Table Text Block] | Our debt obligations consisted of the following as of March 31, 2024 and December 31, 2023:
| As of |
| March 31, 2024 |  | December 31, 2023 |
(in millions) | Total Aggregate Principal Amount Available/ Outstanding(1) |  | Principal Amount Outstanding |  | Carrying Value |  | Total Aggregate Principal Amount Available/ Outstanding(1) |  | Principal Amount Outstanding |  | Carrying Value |
Revolving Credit Facility | $ | 4,608 |  | (2) | $ | 1,102 |  |  | $ | 1,102 |  |  | $ | 4,758 |  | (2) | $ | 1,413 |  |  | $ | 1,413 |  |
Revolving Funding Facility | 1,775 |  |  | 651 |  |  | 651 |  |  | 1,775 |  |  | 863 |  |  | 863 |  |
SMBC Funding Facility | 800 |  | (3) | 176 |  |  | 176 |  |  | 800 |  | (3) | 401 |  |  | 401 |  |
BNP Funding Facility | 865 |  |  | 575 |  |  | 575 |  |  | 865 |  |  | 575 |  |  | 575 |  |
2024 Convertible Notes | — |  |  | — |  |  | — |  | (4) | 403 |  |  | 403 |  |  | 402 |  | (4)
2024 Notes | 900 |  |  | 900 |  |  | 900 |  | (4) | 900 |  |  | 900 |  |  | 899 |  | (4)
March 2025 Notes | 600 |  |  | 600 |  |  | 599 |  | (4) | 600 |  |  | 600 |  |  | 599 |  | (4)
July 2025 Notes | 1,250 |  |  | 1,250 |  |  | 1,254 |  | (4) | 1,250 |  |  | 1,250 |  |  | 1,255 |  | (4)
January 2026 Notes | 1,150 |  |  | 1,150 |  |  | 1,147 |  | (4) | 1,150 |  |  | 1,150 |  |  | 1,146 |  | (4)
July 2026 Notes | 1,000 |  |  | 1,000 |  |  | 993 |  | (4) | 1,000 |  |  | 1,000 |  |  | 993 |  | (4)
January 2027 Notes | 900 |  |  | 900 |  |  | 890 |  | (4)(5) | 900 |  |  | 900 |  |  | 905 |  | (4)(5)
June 2027 Notes | 500 |  |  | 500 |  |  | 496 |  | (4) | 500 |  |  | 500 |  |  | 495 |  | (4)
2028 Notes | 1,250 |  |  | 1,250 |  |  | 1,247 |  | (4) | 1,250 |  |  | 1,250 |  |  | 1,247 |  | (4)
2029 Notes | 1,000 |  |  | 1,000 |  |  | 974 |  | (4)(5) | — |  |  | — |  |  | — |  |
2031 Notes | 700 |  |  | 700 |  |  | 691 |  | (4) | 700 |  |  | 700 |  |  | 691 |  | (4)
Total | $ | 17,298 |  |  | $ | 11,754 |  |  | $ | 11,695 |  |  | $ | 16,851 |  |  | $ | 11,905 |  |  | $ | 11,884 |  |
________________________________________ (1)Represents the total aggregate amount committed or outstanding, as applicable, under such instrument. Borrowings under the committed Revolving Credit Facility, Revolving Funding Facility, SMBC Funding Facility and BNP Funding Facility (each as defined below) are subject to borrowing base and other restrictions. (2)Provides for a feature that allows us, under certain circumstances, to increase the size of the Revolving Credit Facility (as defined below) to a maximum of $7.1 billion. (3)Provides for a feature that allows ACJB (as defined below), under certain circumstances, to increase the size of the SMBC Funding Facility (as defined below) to a maximum of $1.0 billion. (4)Represents the aggregate principal amount outstanding, less unamortized debt issuance costs and the net unaccreted/amortized discount or premium recorded upon issuance. In March 2024, we repaid in full the 2024 Convertible Notes upon their maturity. (5)The carrying values of the January 2027 Notes and the 2029 Notes (each as defined below) as of March 31, 2024 includes a $1 million increase and $9 million decrease, respectively, as a result of an effective hedge accounting relationship. The carrying value of the January 2027 Notes as of December 31, 2023 includes a $15 million increase as a result of an effective hedge accounting relationship. See Note 6 to our consolidated financial statements for the three months ended March 31, 2024 for more information. The weighted average stated interest rate and weighted average maturity, both on aggregate principal amount outstanding, of all our debt outstanding as of March 31, 2024 were 4.9% and 3.0 years, respectively, and as of December 31, 2023 were 4.8% and 3.0 years, respectively. The weighted average stated interest rate of all our debt outstanding as of March 31, 2024 and December 31, 2023 includes the impact of interest rate swaps. See Note 6 to our consolidated financial statements for the three months ended March 31, 2024 for more information on the interest rate swaps. The ratio of total principal amount of debt outstanding to stockholders’ equity as of March 31, 2024 was 0.99:1.00 compared to 1.07:1.00 as of December 31, 2023. Revolving Credit Facility We are party to a senior secured revolving credit facility (as amended and restated, the “Revolving Credit Facility”), that allows us to borrow up to $4.6 billion at any one time outstanding. The Revolving Credit Facility consists of a $3.5 billion revolving tranche and a $1.1 billion term loan tranche. As of March 31, 2024, the end of the revolving periods and the stated maturity dates of the various revolving and term loan tranches of the Revolving Credit Facility were as follows:
(in millions) | Total Aggregate Principal Amount Committed/ Outstanding |  | End of Revolving Period |  | Maturity Date |  |  |
Revolving tranche | $ | 2,905 |  |  | April 19, 2027 |  | April 19, 2028 |  |  |
| 494 |  | March 31, 2026 |  | March 31, 2027 |  |  |
| 107 |  | March 31, 2025 |  | March 31, 2026 |  |  |
| 3,506 |  |  |  |  |  |  |  |
Term loan tranche | 908 |  |  |  |  | April 19, 2028 |  |  |
| 116 |  |  |  | March 31, 2027 |  |  |
| 28 |  |  |  | March 31, 2026 |  |  |
| 50 |  |  |  | March 30, 2025 |  |  |
| 1,102 |  |  |  |  |  |  |  |
| $ | 4,608 |  |  |  |  |  |  |  |
The Revolving Credit Facility also provides for a feature that allows us, under certain circumstances, to increase the overall size of the Revolving Credit Facility to a maximum of $7.1 billion. The interest rate charged on the Revolving Credit Facility is based on SOFR (or an alternative rate of interest for certain loans, commitments and/or other extensions of credit denominated in Sterling, Canadian Dollars, Euros and certain other foreign currencies) plus a credit spread adjustment of 0.10% and an applicable spread of either 1.75% or 1.875% or an “alternate base rate” (as defined in the agreements governing the Revolving Credit Facility) plus a credit spread adjustment of 0.10% and an applicable spread of either 0.75% or 0.875%, in each case, determined monthly based on the total amount of the borrowing base relative to the sum of (i) the greater of (a) the aggregate amount of revolving exposure and term loans outstanding under the Revolving Credit Facility and (b) 85% of the total commitments of the Revolving Credit Facility (or, if higher, the total revolving exposure) plus (ii) other debt, if any, secured by the same collateral as the Revolving Credit Facility. As of March 31, 2024, the applicable spread in effect was 1.75%. We are also required to pay a letter of credit fee of either 2.00% or 2.125% per annum on letters of credit issued, determined monthly based on the total amount of the borrowing base relative to the total commitments of the Revolving Credit Facility and other debt, if any, secured by the same collateral as the Revolving Credit Facility. Additionally, we are required to pay a commitment fee of 0.375% per annum on any unused portion of the Revolving Credit Facility. As of March 31, 2024, there was $1.1 billion outstanding under the Revolving Credit Facility and we were in compliance in all material respects with the terms of the Revolving Credit Facility. See “Recent Developments,” as well as Note 14 to our consolidated financial statements for the three months ended March 31, 2024 for a subsequent event relating to the Revolving Credit Facility. Revolving Funding Facility We and our consolidated subsidiary, Ares Capital CP Funding LLC (“Ares Capital CP”), are party to a revolving funding facility (as amended, the “Revolving Funding Facility”), that allows Ares Capital CP to borrow up to $1.8 billion at any one time outstanding. The Revolving Funding Facility is secured by all of the assets held by, and the membership interest in, Ares Capital CP. The end of the reinvestment period and the stated maturity date for the Revolving Funding Facility are December 29, 2024 and December 29, 2026, respectively. The interest rate charged on the Revolving Funding Facility is based on SOFR plus a credit spread adjustment of 0.10% or a “base rate” (as defined in the agreements governing the Revolving Funding Facility) plus an applicable spread of 1.90% per annum. Ares Capital CP is also required to pay a commitment fee of between 0.50% and 1.25% per annum depending on the size of the unused portion of the Revolving Funding Facility. As of March 31, 2024, there was $651 million outstanding under the Revolving Funding Facility and we and Ares Capital CP were in compliance in all material respects with the terms of the Revolving Funding Facility. SMBC Funding Facility We and our consolidated subsidiary, Ares Capital JB Funding LLC (“ACJB”), are party to a revolving funding facility (as amended, the “SMBC Funding Facility”), with ACJB, as the borrower, and Sumitomo Mitsui Banking Corporation, as the administrative agent and collateral agent, that allows ACJB to borrow up to $800 million at any one time outstanding. The SMBC Funding Facility also provides for a feature that allows ACJB, subject to receiving certain consents, to increase the overall size of the SMBC Funding Facility to $1.0 billion. The SMBC Funding Facility is secured by all of the assets held by ACJB. The end of the reinvestment period and the stated maturity date for the SMBC Funding Facility are March 28, 2027 and March 28, 2029, respectively. The reinvestment period and the stated maturity date are both subject to two one-year extensions by mutual agreement. The interest rate charged on the SMBC Funding Facility is based on an applicable spread of either (i) 2.50% over one month SOFR or (ii) 1.50% over a “base rate” (as defined in the agreements governing the SMBC Funding Facility), in each case, determined monthly based on the amount of the average borrowings outstanding under the SMBC Funding Facility. As of March 31, 2024, the applicable spread in effect was 2.50%. ACJB is also required to pay a commitment fee of between 0.50% and 1.00% per annum depending on the size of the unused portion of the SMBC Funding Facility. As of March 31, 2024, there was $176 million outstanding under the SMBC Funding Facility and we and ACJB were in compliance in all material respects with the terms of the SMBC Funding Facility. BNP Funding Facility We and our consolidated subsidiary, ARCC FB Funding LLC (“AFB”), are party to a revolving funding facility (as amended, the “BNP Funding Facility”) with AFB, as the borrower, and BNP Paribas, as the administrative agent and lender, that allows AFB to borrow up to $865 million at any one time outstanding. The BNP Funding Facility is secured by all of the assets held by AFB. The end of the reinvestment period and the stated maturity date for the BNP Funding Facility are April 20, 2026 and April 20, 2028, respectively. The reinvestment period and the stated maturity date are both subject to a one-year extension by mutual agreement. The interest rate charged on the BNP Funding Facility was based on applicable SOFR, or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin of (i) 2.65% during the reinvestment period and (ii) 3.15% following the reinvestment period. As of March 31, 2024, the applicable spread in effect was 2.65%. AFB is required to pay a commitment fee of between 0.00% and 1.25% per annum depending on the size of the unused portion of the BNP Funding Facility. As of March 31, 2024, there was $575 million outstanding under the BNP Funding Facility and we and AFB were in compliance in all material respects with the terms of the BNP Funding Facility. See “Recent Developments,” as well as Note 14 to our consolidated financial statements for the three months ended March 31, 2024 for a subsequent event relating to the BNP Funding Facility. 2024 Convertible Unsecured Notes In March 2024, we repaid in full the $403 million in aggregate principal amount of unsecured convertible notes which bore interest at a rate of 4.625% per year, payable semi-annually (the “2024 Convertible Notes”) upon their maturity, resulting in a realized loss on extinguishment of debt of $14 million. In accordance with the indenture governing the 2024 Convertible Notes, we settled the repayment of the 2024 Convertible Notes with a combination of cash and shares of our common stock. Approximately $393 million of aggregate principal amount was settled with approximately 20 million shares of our common stock and the remaining $10 million was settled with available cash. Unsecured Notes We issued certain unsecured notes (each issuance of which is referred to herein using the “defined term” set forth under the “Unsecured Notes” column of the table below and collectively referred to as the “Unsecured Notes”), that pay interest semi-annually and all principal amounts are due upon maturity. Each of the Unsecured Notes may be redeemed in whole or in part at any time at our option at a redemption price equal to par plus a “make whole” premium, if applicable, as determined pursuant to the indentures governing each of the Unsecured Notes, plus any accrued and unpaid interest. Certain key terms related to the features for the Unsecured Notes as of March 31, 2024 are listed below.
(dollar amounts in millions) Unsecured Notes | Aggregate Principal Amount Issued |  | Effective Stated Interest Rate |  | Original Issuance Date |  | Maturity Date
2024 Notes | $ | 900 |  |  | 4.200% |  | June 10, 2019 |  | June 10, 2024
March 2025 Notes | $ | 600 |  |  | 4.250% |  | January 11, 2018 |  | March 1, 2025
July 2025 Notes | $ | 1,250 |  |  | 3.250% |  | January 15, 2020 |  | July 15, 2025
January 2026 Notes | $ | 1,150 |  |  | 3.875% |  | July 15, 2020 |  | January 15, 2026
July 2026 Notes | $ | 1,000 |  |  | 2.150% |  | January 13, 2021 |  | July 15, 2026
January 2027 Notes(1) | $ | 900 |  |  | 7.906% |  | August 3, 2023 |  | January 15, 2027
June 2027 Notes | $ | 500 |  |  | 2.875% |  | January 13, 2022 |  | June 15, 2027
2028 Notes | $ | 1,250 |  |  | 2.875% |  | June 10, 2021 |  | June 15, 2028
2029 Notes(1) | $ | 1,000 |  |  | 7.348% |  | January 23, 2024 |  | March 1, 2029
2031 Notes | $ | 700 |  |  | 3.200% |  | November 4, 2021 |  | November 15, 2031
________________________________________ (1)The effective stated interest rates of the January 2027 Notes and 2029 Notes include the impact of interest rate swaps. In connection with the January 2027 Notes, we entered into interest rate swaps for a total notional amount of $900 million that mature on January 15, 2027 to more closely align the interest rate of such liability with our investment portfolio, which consists of primarily floating rate loans. Under the interest rate swap agreements, we receive a fixed interest rate of 7.000% and pay a floating interest rate of one-month SOFR plus 2.581%. We designated these interest rate swaps and the related January 2027 Notes as a qualifying hedge accounting relationship. See Note 6 to our consolidated financial statements for the three months ended March 31, 2024 for more information on the interest rate swaps. In connection with the 2029 Notes, we entered into an interest rate swap agreement for a total notional amount of $1.0 billion that matures on March 1, 2029 to more closely align the interest rate of such liability with its investment portfolio, which consists of primarily floating rate loans. Under the interest rate swap agreement, we received a fixed interest rate of 5.875% and pays a floating interest rate of one-month SOFR plus 2.023%. We designated this interest rate swap and the 2029 Notes as a qualifying hedge accounting relationship. See Note 6 to our consolidated financial statements for the three months ended March 31, 2024 for more information on the interest rate swap. See Note 5 to our consolidated financial statements for the three months ended March 31, 2024 for more information on our debt obligations. As of March 31, 2024, we were in compliance in all material respects with the indentures governing the Unsecured Notes. The Unsecured Notes are our senior unsecured obligations and rank senior in right of payment to any future indebtedness that is expressly subordinated in right of payment to the Unsecured Notes; equal in right of payment to our existing and future unsecured indebtedness that is not expressly subordinated; effectively junior in right of payment to any of our secured indebtedness (including existing unsecured indebtedness that we later secure) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by our subsidiaries, financing vehicles or similar facilities. |  |  |  |  |  |  |  |
Revolving Funding Facility [Member] |  |  |  |  |  |  |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt, Title [Text Block] | Revolving Funding Facility |  |  |  |  |  |  |  |
Long Term Debt, Structuring [Text Block] | We and our consolidated subsidiary, Ares Capital CP Funding LLC (“Ares Capital CP”), are party to a revolving funding facility (as amended, the “Revolving Funding Facility”), that allows Ares Capital CP to borrow up to $1.8 billion at any one time outstanding. The Revolving Funding Facility is secured by all of the assets held by, and the membership interest in, Ares Capital CP. The end of the reinvestment period and the stated maturity date for the Revolving Funding Facility are December 29, 2024 and December 29, 2026, respectively. The interest rate charged on the Revolving Funding Facility is based on SOFR plus a credit spread adjustment of 0.10% or a “base rate” (as defined in the agreements governing the Revolving Funding Facility) plus an applicable spread of 1.90% per annum. Ares Capital CP is also required to pay a commitment fee of between 0.50% and 1.25% per annum depending on the size of the unused portion of the Revolving Funding Facility. As of March 31, 2024, there was $651 million outstanding under the Revolving Funding Facility and we and Ares Capital CP were in compliance in all material respects with the terms of the Revolving Funding Facility. |  |  |  |  |  |  |  |
SMBC Funding Facility [Member] |  |  |  |  |  |  |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt, Title [Text Block] | SMBC Funding Facility |  |  |  |  |  |  |  |
Long Term Debt, Structuring [Text Block] | We and our consolidated subsidiary, Ares Capital JB Funding LLC (“ACJB”), are party to a revolving funding facility (as amended, the “SMBC Funding Facility”), with ACJB, as the borrower, and Sumitomo Mitsui Banking Corporation, as the administrative agent and collateral agent, that allows ACJB to borrow up to $800 million at any one time outstanding. The SMBC Funding Facility also provides for a feature that allows ACJB, subject to receiving certain consents, to increase the overall size of the SMBC Funding Facility to $1.0 billion. The SMBC Funding Facility is secured by all of the assets held by ACJB. The end of the reinvestment period and the stated maturity date for the SMBC Funding Facility are March 28, 2027 and March 28, 2029, respectively. The reinvestment period and the stated maturity date are both subject to two one-year extensions by mutual agreement. The interest rate charged on the SMBC Funding Facility is based on an applicable spread of either (i) 2.50% over one month SOFR or (ii) 1.50% over a “base rate” (as defined in the agreements governing the SMBC Funding Facility), in each case, determined monthly based on the amount of the average borrowings outstanding under the SMBC Funding Facility. As of March 31, 2024, the applicable spread in effect was 2.50%. ACJB is also required to pay a commitment fee of between 0.50% and 1.00% per annum depending on the size of the unused portion of the SMBC Funding Facility. As of March 31, 2024, there was $176 million outstanding under the SMBC Funding Facility and we and ACJB were in compliance in all material respects with the terms of the SMBC Funding Facility. |  |  |  |  |  |  |  |
BNP Funding Facility [Member] |  |  |  |  |  |  |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt, Title [Text Block] | BNP Funding Facility |  |  |  |  |  |  |  |
Long Term Debt, Structuring [Text Block] | We and our consolidated subsidiary, ARCC FB Funding LLC (“AFB”), are party to a revolving funding facility (as amended, the “BNP Funding Facility”) with AFB, as the borrower, and BNP Paribas, as the administrative agent and lender, that allows AFB to borrow up to $865 million at any one time outstanding. The BNP Funding Facility is secured by all of the assets held by AFB. The end of the reinvestment period and the stated maturity date for the BNP Funding Facility are April 20, 2026 and April 20, 2028, respectively. The reinvestment period and the stated maturity date are both subject to a one-year extension by mutual agreement. The interest rate charged on the BNP Funding Facility was based on applicable SOFR, or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin of (i) 2.65% during the reinvestment period and (ii) 3.15% following the reinvestment period. As of March 31, 2024, the applicable spread in effect was 2.65%. AFB is required to pay a commitment fee of between 0.00% and 1.25% per annum depending on the size of the unused portion of the BNP Funding Facility. As of March 31, 2024, there was $575 million outstanding under the BNP Funding Facility and we and AFB were in compliance in all material respects with the terms of the BNP Funding Facility. See “Recent Developments,” as well as Note 14 to our consolidated financial statements for the three months ended March 31, 2024 for a subsequent event relating to the BNP Funding Facility. |  |  |  |  |  |  |  |
2024 Convertible Notes [Member] |  |  |  |  |  |  |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt, Structuring [Text Block] |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt, Title [Text Block] | Revolving Credit Facility |  |  |  |  |  |  |  |
Long Term Debt, Structuring [Text Block] | We are party to a senior secured revolving credit facility (as amended and restated, the “Revolving Credit Facility”), that allows us to borrow up to $4.6 billion at any one time outstanding. The Revolving Credit Facility consists of a $3.5 billion revolving tranche and a $1.1 billion term loan tranche. As of March 31, 2024, the end of the revolving periods and the stated maturity dates of the various revolving and term loan tranches of the Revolving Credit Facility were as follows:
(in millions) | Total Aggregate Principal Amount Committed/ Outstanding |  | End of Revolving Period |  | Maturity Date |  |  |
Revolving tranche | $ | 2,905 |  |  | April 19, 2027 |  | April 19, 2028 |  |  |
| 494 |  | March 31, 2026 |  | March 31, 2027 |  |  |
| 107 |  | March 31, 2025 |  | March 31, 2026 |  |  |
| 3,506 |  |  |  |  |  |  |  |
Term loan tranche | 908 |  |  |  |  | April 19, 2028 |  |  |
| 116 |  |  |  | March 31, 2027 |  |  |
| 28 |  |  |  | March 31, 2026 |  |  |
| 50 |  |  |  | March 30, 2025 |  |  |
| 1,102 |  |  |  |  |  |  |  |
| $ | 4,608 |  |  |  |  |  |  |  |
The Revolving Credit Facility also provides for a feature that allows us, under certain circumstances, to increase the overall size of the Revolving Credit Facility to a maximum of $7.1 billion. The interest rate charged on the Revolving Credit Facility is based on SOFR (or an alternative rate of interest for certain loans, commitments and/or other extensions of credit denominated in Sterling, Canadian Dollars, Euros and certain other foreign currencies) plus a credit spread adjustment of 0.10% and an applicable spread of either 1.75% or 1.875% or an “alternate base rate” (as defined in the agreements governing the Revolving Credit Facility) plus a credit spread adjustment of 0.10% and an applicable spread of either 0.75% or 0.875%, in each case, determined monthly based on the total amount of the borrowing base relative to the sum of (i) the greater of (a) the aggregate amount of revolving exposure and term loans outstanding under the Revolving Credit Facility and (b) 85% of the total commitments of the Revolving Credit Facility (or, if higher, the total revolving exposure) plus (ii) other debt, if any, secured by the same collateral as the Revolving Credit Facility. As of March 31, 2024, the applicable spread in effect was 1.75%. We are also required to pay a letter of credit fee of either 2.00% or 2.125% per annum on letters of credit issued, determined monthly based on the total amount of the borrowing base relative to the total commitments of the Revolving Credit Facility and other debt, if any, secured by the same collateral as the Revolving Credit Facility. Additionally, we are required to pay a commitment fee of 0.375% per annum on any unused portion of the Revolving Credit Facility. As of March 31, 2024, there was $1.1 billion outstanding under the Revolving Credit Facility and we were in compliance in all material respects with the terms of the Revolving Credit Facility. See “Recent Developments,” as well as Note 14 to our consolidated financial statements for the three months ended March 31, 2024 for a subsequent event relating to the Revolving Credit Facility. |  |  |  |  |  |  |  |
Unsecured Notes [Member] |  |  |  |  |  |  |  |  |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] |  |  |  |  |  |  |  |  |
Long Term Debt, Title [Text Block] | Unsecured Notes |  |  |  |  |  |  |  |
Long Term Debt, Structuring [Text Block] | We issued certain unsecured notes (each issuance of which is referred to herein using the “defined term” set forth under the “Unsecured Notes” column of the table below and collectively referred to as the “Unsecured Notes”), that pay interest semi-annually and all principal amounts are due upon maturity. Each of the Unsecured Notes may be redeemed in whole or in part at any time at our option at a redemption price equal to par plus a “make whole” premium, if applicable, as determined pursuant to the indentures governing each of the Unsecured Notes, plus any accrued and unpaid interest. Certain key terms related to the features for the Unsecured Notes as of March 31, 2024 are listed below.
(dollar amounts in millions) Unsecured Notes | Aggregate Principal Amount Issued |  | Effective Stated Interest Rate |  | Original Issuance Date |  | Maturity Date
2024 Notes | $ | 900 |  |  | 4.200% |  | June 10, 2019 |  | June 10, 2024
March 2025 Notes | $ | 600 |  |  | 4.250% |  | January 11, 2018 |  | March 1, 2025
July 2025 Notes | $ | 1,250 |  |  | 3.250% |  | January 15, 2020 |  | July 15, 2025
January 2026 Notes | $ | 1,150 |  |  | 3.875% |  | July 15, 2020 |  | January 15, 2026
July 2026 Notes | $ | 1,000 |  |  | 2.150% |  | January 13, 2021 |  | July 15, 2026
January 2027 Notes(1) | $ | 900 |  |  | 7.906% |  | August 3, 2023 |  | January 15, 2027
June 2027 Notes | $ | 500 |  |  | 2.875% |  | January 13, 2022 |  | June 15, 2027
2028 Notes | $ | 1,250 |  |  | 2.875% |  | June 10, 2021 |  | June 15, 2028
2029 Notes(1) | $ | 1,000 |  |  | 7.348% |  | January 23, 2024 |  | March 1, 2029
2031 Notes | $ | 700 |  |  | 3.200% |  | November 4, 2021 |  | November 15, 2031
________________________________________ (1)The effective stated interest rates of the January 2027 Notes and 2029 Notes include the impact of interest rate swaps. In connection with the January 2027 Notes, we entered into interest rate swaps for a total notional amount of $900 million that mature on January 15, 2027 to more closely align the interest rate of such liability with our investment portfolio, which consists of primarily floating rate loans. Under the interest rate swap agreements, we receive a fixed interest rate of 7.000% and pay a floating interest rate of one-month SOFR plus 2.581%. We designated these interest rate swaps and the related January 2027 Notes as a qualifying hedge accounting relationship. See Note 6 to our consolidated financial statements for the three months ended March 31, 2024 for more information on the interest rate swaps. In connection with the 2029 Notes, we entered into an interest rate swap agreement for a total notional amount of $1.0 billion that matures on March 1, 2029 to more closely align the interest rate of such liability with its investment portfolio, which consists of primarily floating rate loans. Under the interest rate swap agreement, we received a fixed interest rate of 5.875% and pays a floating interest rate of one-month SOFR plus 2.023%. We designated this interest rate swap and the 2029 Notes as a qualifying hedge accounting relationship. See Note 6 to our consolidated financial statements for the three months ended March 31, 2024 for more information on the interest rate swap. See Note 5 to our consolidated financial statements for the three months ended March 31, 2024 for more information on our debt obligations. As of March 31, 2024, we were in compliance in all material respects with the indentures governing the Unsecured Notes. The Unsecured Notes are our senior unsecured obligations and rank senior in right of payment to any future indebtedness that is expressly subordinated in right of payment to the Unsecured Notes; equal in right of payment to our existing and future unsecured indebtedness that is not expressly subordinated; effectively junior in right of payment to any of our secured indebtedness (including existing unsecured indebtedness that we later secure) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by our subsidiaries, financing vehicles or similar facilities. |  |  |  |  |  |  |  |

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