S000006644 [Member] Investment Objectives and Goals - Loomis Sayles Institutional High Income Fund

Sep. 30, 2025

Prospectus [Line Items]

Risk/Return [Heading]

Loomis Sayles Institutional High Income Fund

Objective [Heading]

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

The Fund’s investment objective is high total investment return through a combination of current income and capital appreciation.