Investment Objectives and Goals	Mar. 31, 2026
Mercer US Small/Mid Cap Equity Fund \| Mercer US Small/Mid Cap Equity Fund
Prospectus [Line Items]
Risk/Return [Heading]	Mercer US Small/Mid Cap Equity Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide long-term total return, comprised primarily of capital appreciation.
Mercer Non-US Core Equity Fund \| Mercer Non-US Core Equity Fund
Prospectus [Line Items]
Risk/Return [Heading]	Mercer Non-US Core Equity Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide long-term total return, which includes capital appreciation and income.
Mercer Emerging Markets Equity Fund \| Mercer Emerging Markets Equity Fund
Prospectus [Line Items]
Risk/Return [Heading]	Mercer Emerging Markets Equity Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide long-term total return, which includes capital appreciation and income.
Mercer Core Fixed Income Fund \| Mercer Core Fixed Income Fund
Prospectus [Line Items]
Risk/Return [Heading]	Mercer Core Fixed Income Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide total return, consisting of both current income and capital appreciation.
Mercer Opportunistic Fixed Income Fund \| Mercer Opportunistic Fixed Income Fund
Prospectus [Line Items]
Risk/Return [Heading]	Mercer Opportunistic Fixed Income Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide long-term total return, which includes capital appreciation and income.
Mercer Short Duration Fixed Income Fund \| Mercer Short Duration Fixed Income Fund
Prospectus [Line Items]
Risk/Return [Heading]	Mercer Short Duration Fixed Income Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide total return, consisting of both current income and capital appreciation.