Shareholder Report, Average Annual Return (Details)

12 Months Ended

60 Months Ended

120 Months Ended

Oct. 31, 2025

Oct. 31, 2025

Oct. 31, 2025

C000149725

Average Annual Return [Line Items]

Line Graph and Table Measure Name

MetLife Core Plus Fund, I Class Shares

C000149726

Average Annual Return [Line Items]

Line Graph and Table Measure Name

MetLife Core Plus Fund, R Class Shares

Without Sales Load [Member] | C000149725

Average Annual Return [Line Items]

Average Annual Return, Percent

6.59%

(0.15%)

2.21%

Without Sales Load [Member] | C000149726

Average Annual Return [Line Items]

Average Annual Return, Percent

2.54%

(1.74%)

0.56%

Bloomberg U.S. Aggregate Bond Index (USD) (TR)

Average Annual Return [Line Items]

Line Graph and Table Measure Name

^[1]

Bloomberg U.S. Aggregate Bond Index (USD) (TR)

Average Annual Return, Percent

6.16%

(0.24%)

1.90%

Bloomberg U.S. Aggregate Bond Index (USD) (TR)

Average Annual Return [Line Items]

Line Graph and Table Measure Name

^[2]

Bloomberg U.S. Aggregate Bond Index (USD) (TR)

Average Annual Return, Percent

6.16%

(0.24%)

1.90%

[1]	Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[2]	Total Return (TR) - Reflects no deductions for fees, expenses or taxes.