N-2 - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 09, 2025 |
Mar. 11, 2024 |
Nov. 24, 2020 |
Feb. 10, 2020 |
Sep. 19, 2013 |
Jun. 30, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Dec. 31, 2024 |
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| Cover [Abstract] | |||||||||||
| Entity Central Index Key | 0001572694 | ||||||||||
| Amendment Flag | false | ||||||||||
| Securities Act File Number | 814-00998 | ||||||||||
| Document Type | 10-Q | ||||||||||
| Entity Registrant Name | Goldman Sachs BDC, Inc. | ||||||||||
| Entity Address, Address Line One | 200 West Street | ||||||||||
| Entity Address, City or Town | New York | ||||||||||
| Entity Address, State or Province | NY | ||||||||||
| Entity Address, Postal Zip Code | 10282 | ||||||||||
| City Area Code | 312 | ||||||||||
| Local Phone Number | 655 - 4419 | ||||||||||
| Entity Emerging Growth Company | false | ||||||||||
| General Description of Registrant [Abstract] | |||||||||||
| Investment Objectives and Practices [Text Block] | The Company’s investment objective is to generate current income and, to a lesser extent, capital appreciation primarily through direct originations of secured debt, including first lien debt, unitranche debt, including last-out portions of such loans, and second lien debt, and unsecured debt, including mezzanine debt, as well as through select equity investments. |
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| Risk Factors [Table Text Block] | ITEM 1A. RISK FACTORS. An investment in our securities involves a high degree of risk. There have been no material changes to the risk factors previously reported under Item 1A. “Risk Factors” of our annual report on Form 10-K for the year ended December 31, 2025, which was filed with the SEC on February 26, 2026. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may materially affect our business, financial condition and/or operating results. |
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| NAV Per Share | [1] | $ 12.06 | $ 12.64 | $ 13.02 | $ 13.41 | ||||||
| 2025 Notes | |||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||||||
| Long Term Debt, Title [Text Block] | 2025 Notes | ||||||||||
| Long Term Debt, Principal | $ 360,000 | ||||||||||
| 2026 Notes | |||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||||||
| Long Term Debt, Title [Text Block] | 2026 Notes | ||||||||||
| Long Term Debt, Principal | $ 500,000 | ||||||||||
| Long Term Debt, Structuring [Text Block] | 2026 Notes On November 24, 2020, we closed an offering of $500.00 million aggregate principal amount of 2.875% unsecured notes due 2026 (the “2026 Notes”). The 2026 Notes matured and were fully repaid on January 15, 2026 in accordance with their terms. For further details, see Note 6 “Debt—2026 Notes” to our consolidated financial statements included in this report. |
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| 2027 Notes | |||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||||||
| Long Term Debt, Title [Text Block] | 2027 Notes | ||||||||||
| Long Term Debt, Principal | $ 400,000 | ||||||||||
| Long Term Debt, Structuring [Text Block] | On March 11, 2024, we closed an offering of $400.00 million aggregate principal amount of 6.375% unsecured notes due 2027 (the “2027 Notes”). The 2027 Notes will mature on March 11, 2027 and may be redeemed in whole or in part at our option at any time or from time to time at the redemption prices set forth in the indenture. For further details, see Note 6 “Debt—2027 Notes” to our consolidated financial statements included in this report. |
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| 2029 Notes | |||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||||||
| Long Term Debt, Title [Text Block] | 2029 Notes | ||||||||||
| Long Term Debt, Principal | $ 400,000 | ||||||||||
| Long Term Debt, Structuring [Text Block] | 2029 Notes On January 28, 2026, we closed an offering of $400.00 million aggregate principal amount of 5.100% unsecured notes due 2029 (the “2029 Notes”). The 2029 Notes will mature on January 28, 2029 and may be redeemed in whole or in part at our option at any time or from time to time at the redemption prices set forth in the indenture. For further details, see Note 6 “Debt—2029 Notes” to our consolidated financial statements included in this report. |
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| 2030 Notes | |||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||||||
| Long Term Debt, Title [Text Block] | 2030 Notes | ||||||||||
| Long Term Debt, Principal | $ 400,000 | ||||||||||
| Long Term Debt, Structuring [Text Block] | 2030 Notes On September 9, 2025, we closed an offering of $400.00 million aggregate principal amount of 5.650% unsecured notes due 2030 (the “2030 Notes”). The 2030 Notes will mature on September 9, 2030 and may be redeemed in whole or in part at our option at any time or from time to time at the redemption prices set forth in the indenture. For further details, see Note 6 “Debt—2030 Notes” to our consolidated financial statements included in this report. |
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| Revolving Credit Facility | |||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||||||
| Long Term Debt, Title [Text Block] | Revolving Credit Facility | ||||||||||
| Long Term Debt, Principal | $ 1,475,000 | ||||||||||
| Long Term Debt, Structuring [Text Block] | Revolving Credit Facility On September 19, 2013, we initially entered into the Revolving Credit Facility, which, as of June 30, 2026, allowed us to borrow up to $1,475.00 million at any one time outstanding, subject to leverage and borrowing base restrictions. For further details, see Note 6 “Debt—Revolving Credit Facility” to our consolidated financial statements included in this report. |
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