0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES link:presentationLink link:calculationLink link:definitionLink 0000004 - Statement - CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 0000006 - Statement - CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 0000007 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS AND TEMPORARY EQUITY link:presentationLink link:calculationLink link:definitionLink 0000008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000009 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 0000009 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 0000010 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 1 link:presentationLink link:calculationLink link:definitionLink 0000011 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 2 link:presentationLink link:calculationLink link:definitionLink 0000011 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 2 link:presentationLink link:calculationLink link:definitionLink 0000012 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 3 link:presentationLink link:calculationLink link:definitionLink 0000013 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 4 link:presentationLink link:calculationLink link:definitionLink 0000014 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 5 link:presentationLink link:calculationLink link:definitionLink 0000015 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 6 link:presentationLink link:calculationLink link:definitionLink 0000015 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 6 link:presentationLink link:calculationLink link:definitionLink 0000016 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 7 link:presentationLink link:calculationLink link:definitionLink 0000016 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 7 link:presentationLink link:calculationLink link:definitionLink 0000017 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 8 link:presentationLink link:calculationLink link:definitionLink 0000017 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 8 link:presentationLink link:calculationLink link:definitionLink 0000018 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 9 link:presentationLink link:calculationLink link:definitionLink 0000019 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 10 link:presentationLink link:calculationLink link:definitionLink 0000019 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 10 link:presentationLink link:calculationLink link:definitionLink 0000020 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 10 link:presentationLink link:calculationLink link:definitionLink 0000021 - Statement - CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) 11 link:presentationLink link:calculationLink link:definitionLink 0000022 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 3 link:presentationLink link:calculationLink link:definitionLink 0000022 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 3 link:presentationLink link:calculationLink link:definitionLink 0000023 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000023 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000024 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 4 link:presentationLink link:calculationLink link:definitionLink 0000025 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 5 link:presentationLink link:calculationLink link:definitionLink 0000026 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 6 link:presentationLink link:calculationLink link:definitionLink 0000027 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 7 link:presentationLink link:calculationLink link:definitionLink 0000028 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 8 link:presentationLink link:calculationLink link:definitionLink 0000028 - Statement - CONSOLIDATED SCHEDULES OF INVESTMENTS (Parenthetical) 8 link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - Portfolio Investments link:presentationLink link:calculationLink link:definitionLink 0000032 - Disclosure - Revolving Credit Facility link:presentationLink link:calculationLink link:definitionLink 0000033 - Disclosure - Convertible Notes link:presentationLink link:calculationLink link:definitionLink 0000034 - Disclosure - Public Notes link:presentationLink link:calculationLink link:definitionLink 0000035 - Disclosure - Prospect Capital InterNotes® link:presentationLink link:calculationLink link:definitionLink 0000036 - Disclosure - Fair Value and Maturity of Debt Outstanding link:presentationLink link:calculationLink link:definitionLink 0000037 - Disclosure - Equity Offerings, Offering Expenses, and Distributions link:presentationLink link:calculationLink link:definitionLink 0000038 - Disclosure - Other Income link:presentationLink link:calculationLink link:definitionLink 0000039 - Disclosure - Net Increase (Decrease) in Net Assets per Common Share link:presentationLink link:calculationLink link:definitionLink 0000040 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 0000041 - Disclosure - Related Party Agreements and Transactions link:presentationLink link:calculationLink link:definitionLink 0000042 - Disclosure - Transactions with Controlled Companies link:presentationLink link:calculationLink link:definitionLink 0000043 - Disclosure - Litigation link:presentationLink link:calculationLink link:definitionLink 0000044 - Disclosure - Financial Highlights link:presentationLink link:calculationLink link:definitionLink 0000045 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 0000046 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Portfolio Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Revolving Credit Facility (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Public Notes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Prospect Capital InterNotes® (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Fair Value and Maturity of Debt Outstanding (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Equity Offerings, Offering Expenses, and Distributions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Other Income (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Net Increase (Decrease) in Net Assets per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Transactions with Controlled Companies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Financial Highlights (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Subsequent Events (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Significant Accounting Policies (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Portfolio Investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Portfolio Investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Portfolio Investments - Composition of Investment Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Portfolio Investments - Fair Value of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Portfolio Investments - Changes in Fair Value of Level 3 Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Portfolio Investments - Industries and Geographical Locations Comprising Greater than 10% of Portfolio Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Portfolio Investments - Unobservable Inputs Used in Fair Value Measurement of Level 3 Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Portfolio Investments - Mortgages Outstanding for NPRC (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Portfolio Investments - Unconsolidated Significant Subsidiaries (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Revolving Credit Facility - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Revolving Credit Facility - Schedule of Average Rate and Outstanding Balance (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Public Notes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Public Notes - Schedule of Fair Value Amounts for the Company's Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Public Notes - Schedule of Changes in the Fair Values of Derivatives Designated as Fair Value hedges on Earnings and Reclassification of Derivatives Designated as Cash Flow Hedges into Earnings (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Public Notes - Schedule of Offsetting of Derivative Instruments (Details) (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Prospect Capital InterNotes® - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Prospect Capital InterNotes® - Schedule Issued Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Prospect Capital InterNotes® - Schedule of Notes Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Fair Value and Maturity of Debt Outstanding - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Fair Value and Maturity of Debt Outstanding - Schedule Senior Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Fair Value and Maturity of Debt Outstanding - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Fair Value and Maturity of Debt Outstanding - Schedule of Debt Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Equity Offerings, Offering Expenses, and Distributions - Preferred Stock Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Equity Offerings, Offering Expenses, and Distributions - Schedule of Preferred Stock Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Equity Offerings, Offering Expenses, and Distributions - Schedule of Outstanding Preferred Shares (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Equity Offerings, Offering Expenses, and Distributions - Schedule of Outstanding Preferred Shares Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Equity Offerings, Offering Expenses, and Distributions - Common Stock Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Equity Offerings, Offering Expenses, and Distributions - Schedule of Common Stock Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Other Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Net Increase (Decrease) in Net Assets per Common Share - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Net Increase (Decrease) in Net Assets per Common Share- Schedule of Computation of Basic and Diluted Earnings Per Common Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Income Taxes - Schedule of Investment Company, Distribution to Shareholders (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Income Taxes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Income Taxes - Schedule of Reconciliation of Net Increase in Net Assets Resulting from Operations to Taxable Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Related Party Agreements and Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Transactions with Controlled Companies - Belnick, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Transactions with Controlled Companies - CP Energy Services Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Transactions with Controlled Companies - Credit Central Loan Company, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Transactions with Controlled Companies - Echelon Transportation LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Transactions with Controlled Companies - Energy Solutions Holdings Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Transactions with Controlled Companies - First Tower Finance Company LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Transactions with Controlled Companies - Freedom Marine Solutions, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Transactions with Controlled Companies - InterDent, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Transactions with Controlled Companies - Kickapoo Ranch Pet Resort (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Transactions with Controlled Companies - MITY, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Transactions with Controlled Companies - National Property REIT Corp. (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Transactions with Controlled Companies - Nationwide Loan Company LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Transactions with Controlled Companies - NMMB, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Transactions with Controlled Companies - Pacific World Corporation (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Transactions with Controlled Companies - QC Holdings TopCo, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Transactions with Controlled Companies - R-V Industries, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Transactions with Controlled Companies - Strategic Chemical Solutions Corp. (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Transactions with Controlled Companies - Universal Turbine Parts, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Transactions with Controlled Companies - Valley Electric Company, Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Transactions with Controlled Companies - Victor Technology, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Financial Highlights (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink