XML 106 R89.htm IDEA: XBRL DOCUMENT
v3.25.0.1

INCOME AND EXCISE TAXES - Dividends Paid Per Common Share (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
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |  |  |  |  |  |  |
Ordinary income (in dollars per share) | $ 1.92 | $ 1.92 | $ 1.80 |  |  |  |  |  |  |
Capital gains (in dollars per share) | 0 | 0 | 0.07 |  |  |  |  |  |  |
Total (in dollars per share) | 1.92 | 1.92 | 1.87 | $ 1.62 | $ 1.60 | $ 1.68 | $ 1.54 | $ 1.52 | $ 1.52 | $ 1.57
Dividend income per share (in dollars per share) | $ 0.3137 | $ 0.0296 | $ 0.0582 |  |  |  |  |  |  |
Dividend Concentration Risk | Dividends | 2024 Interest-Related Dividends |  |  |  |  |  |  |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |  |  |  |  |  |  |
Composition, percent of fair value | 88.60% |  |  |  |  |  |  |  |  |
Dividend Concentration Risk | Dividends | 2023 Interest-Related Dividends |  |  |  |  |  |  |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |  |  |  |  |  |  |
Composition, percent of fair value |  | 80.50% |  |  |  |  |  |  |  |
Dividend Concentration Risk | Dividends | 2022 Interest-Related Dividends |  |  |  |  |  |  |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |  |  |  |  |  |  |
Composition, percent of fair value |  |  | 76.60% |  |  |  |  |  |  |

X
- Definition Investment Company, Distribution, Long-Term Capital Gain, Per Share + References No definition available. + Details
Name: | arcc_InvestmentCompanyDistributionLongTermCapitalGainPerShare
Namespace Prefix: | arcc_
Data Type: | dtr-types1:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment Company, Distribution, Ordinary Income, Dividend Income Per Share + References No definition available. + Details
Name: | arcc_InvestmentCompanyDistributionOrdinaryIncomeDividendIncomePerShare
Namespace Prefix: | arcc_
Data Type: | dtr-types1:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment Company, Distribution, Ordinary Income, Per Share + References No definition available. + Details
Name: | arcc_InvestmentCompanyDistributionOrdinaryIncomePerShare
Namespace Prefix: | arcc_
Data Type: | dtr-types1:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-20 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
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 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/2009/role/commonPracticeRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(h)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 + Details
Name: | us-gaap_InvestmentsOwnedFederalIncomeTaxNoteLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=arcc_DividendConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=arcc_DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=arcc_O2024AInterestRelatedDividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=arcc_O2023AInterestRelatedDividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=arcc_O2022AInterestRelatedDividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |