XML 113 R96.htm IDEA: XBRL DOCUMENT
v3.25.0.1

FINANCIAL HIGHLIGHTS - Financial Highlights, Additional Information (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional dividends declared (in dollars per share) |  |  | $ 0.12 |  |  | $ 0.08 |  |  |  | $ 0.05 |
Per share market value at end of period (in dollars per share) | $ 21.89 | $ 20.03 | 18.47 | $ 21.19 | $ 16.89 | 18.65 | $ 15.58 | $ 15.72 | $ 16.49 | 14.25 | $ 15.61
Total distributions to stockholders (in dollars per share) | $ 1.92 | $ 1.92 | $ 1.87 | $ 1.62 | $ 1.60 | $ 1.68 | $ 1.54 | $ 1.52 | $ 1.52 | $ 1.57 |
Ratio of operating expenses to average net assets | 12.26% | 12.78% | 10.19% | 13.05% | 10.27% | 9.92% | 8.63% | 9.45% | 9.59% | 9.51% |
Base management fee |  |  |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ratio of operating expenses to average net assets | 3.03% | 3.11% | 3.27% | 3.14% | 3.10% | 2.78% | 2.49% | 2.57% | 2.64% | 2.55% |
Income based fee and capital gains incentive fee, net of the fee waiver |  |  |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ratio of operating expenses to average net assets | 3.08% | 3.66% | 1.61% | 4.80% | 1.80% | 2.23% | 2.24% | 2.18% | 2.29% | 2.31% |
Income based fee and capital gains incentive fee, excluding the fee waiver |  |  |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ratio of operating expenses to average net assets | 3.08% | 3.66% | 1.61% | 4.80% | 1.80% | 2.64% | 2.79% | 2.32% | 2.29% | 2.31% |
Interest and credit facility fees |  |  |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ratio of operating expenses to average net assets | 5.79% | 5.60% | 4.89% | 4.61% | 4.54% | 3.94% | 3.33% | 3.37% | 3.58% | 4.32% |
Other operating expenses |  |  |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ratio of operating expenses to average net assets | 0.36% | 0.41% | 0.42% | 0.50% | 0.83% | 0.97% | 0.57% | 1.33% | 1.08% | 0.33% |

X
- Definition Common Stock, Additional Dividends, Per Share, Declared + References No definition available. + Details
Name: | arcc_CommonStockAdditionalDividendsPerShareDeclared
Namespace Prefix: | arcc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or unit amount of distribution to shareholders. Includes, but is not limited to, dividend and capital gain. Excludes distribution for tax return of capital. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-8 + Details
Name: | us-gaap_InvestmentCompanyDistributionToShareholdersPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage, after deduction of fee waiver and incentive fee, of expense to average net assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-14 + Details
Name: | us-gaap_InvestmentCompanyExpenseRatioIncludingIncentiveFee
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-27 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-2 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-3 + Details
Name: | us-gaap_InvestmentCompanyFinancialHighlightsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Market value per share of investment portfolio by investment company. Includes, but is not limited to, per unit, membership interest, or other ownership interest. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 + Details
Name: | us-gaap_InvestmentCompanyMarketValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=arcc_BaseManagementFeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=arcc_IncomeBasedFeesAndCapitalGainsIncentiveFeesNetOfFeeWaiverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=arcc_IncomeBasedFeesAndCapitalGainsIncentiveFeesExcludingFeeWaiverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=arcc_InterestAndCreditFacilityFeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=arcc_OtherOperatingExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |