Investment Objectives and Goals	Feb. 28, 2026
MFS Active Short Duration Income ETF
Prospectus [Line Items]
Risk/Return [Heading]	MFS® Active Short Duration Income ETF Summary of Key Information
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The fund’s investment objective is to seek total return with an emphasis on current income.
MFS Active Short Muni Bond ETF
Prospectus [Line Items]
Risk/Return [Heading]	MFS® Active Short Muni Bond ETF Summary of Key Information
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The fund’s investment objective is to seek total return with an emphasis on income exempt from U.S. federal income tax, but also considering capital preservation.

Investment Objective

MFS® Active Short Muni Bond ETF Summary of Key Information

The fund’s investment objective is to seek total return with an emphasis on income exempt from U.S. federal income tax, but also considering capital preservation.