ORGANIZATION	6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION	(1) ORGANIZATION T Series BDC LLC, formerly known as T Series Middle Market Loan Fund LLC (the “Company”), is a non-diversified, externally managed specialty finance company focused on lending to middle market companies. The Company has elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”). In addition, for U.S. federal income tax purposes, the Company has elected to be treated, and intends to comply with the requirements to qualify annually, as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). The Company is not a subsidiary of or consolidated with Morgan Stanley. The Company was formed as a Delaware limited liability company on September 14, 2021 and commenced investment operations on November 4, 2021. The Company is externally managed by MS Capital Partners Adviser Inc., an indirect wholly owned subsidiary of Morgan Stanley (the “Adviser” or “Investment Adviser”). The Company’s investment objective is to achieve attractive risk-adjusted returns via current income and, to a lesser extent, capital appreciation by investing primarily in directly originated senior secured term loans issued by U.S. middle-market companies backed by private equity sponsors, including first lien senior secured term loans, second lien senior secured term loans, with the balance of its investments expected to be in higher-yielding assets such as mezzanine debt, unsecured debt, equity investments and other opportunistic asset purchases. The Company has conducted and from time to time may conduct private offerings of common units (the “Common Units”) to investors in reliance on exemptions from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”). Each investor at any closing of a private offering makes a capital commitment to purchase Common Units pursuant to a subscription agreement entered into with the Company (a “Subscription Agreement”). Investors are required to fund drawdowns to purchase Common Units up to the amount of their respective capital commitments each time the Company delivers a notice to the investors.

T Series BDC LLC, formerly known as T Series Middle Market Loan Fund LLC (the “Company”), is a non-diversified, externally managed specialty finance company focused on lending to middle market companies. The Company has elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”). In addition, for U.S. federal income tax purposes, the Company has elected to be treated, and intends to comply with the requirements to qualify annually, as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). The Company is not a subsidiary of or consolidated with Morgan Stanley.

The Company was formed as a Delaware limited liability company on September 14, 2021 and commenced investment operations on November 4, 2021. The Company is externally managed by MS Capital Partners Adviser Inc., an indirect wholly owned subsidiary of Morgan Stanley (the “Adviser” or “Investment Adviser”).

The Company’s investment objective is to achieve attractive risk-adjusted returns via current income and, to a lesser extent, capital appreciation by investing primarily in directly originated senior secured term loans issued by U.S. middle-market companies backed by private equity sponsors, including first lien senior secured term loans, second lien senior secured term loans, with the balance of its investments expected to be in higher-yielding assets such as mezzanine debt, unsecured debt, equity investments and other opportunistic asset purchases.

The Company has conducted and from time to time may conduct private offerings of common units (the “Common Units”) to investors in reliance on exemptions from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”). Each investor at any closing of a private offering makes a capital commitment to purchase Common Units pursuant to a subscription agreement entered into with the Company (a “Subscription Agreement”). Investors are required to fund drawdowns to purchase Common Units up to the amount of their respective capital commitments each time the Company delivers a notice to the investors.