v3.25.4
Shareholder Fees
Sep. 30, 2025
MSIFT Discovery Portfolio - Classes I, A, L, C and R6 | Discovery Portfolio | Class I  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Discovery Portfolio - Classes I, A, L, C and R6 | Discovery Portfolio | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.25%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [1]
MSIFT Discovery Portfolio - Classes I, A, L, C and R6 | Discovery Portfolio | Class L  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Discovery Portfolio - Classes I, A, L, C and R6 | Discovery Portfolio | Class C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [2]
MSIFT Discovery Portfolio - Classes I, A, L, C and R6 | Discovery Portfolio | Class R6  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Corporate Bond Portfolio - Classes I, A, L, and C | Corporate Bond Portfolio | Class I  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Corporate Bond Portfolio - Classes I, A, L, and C | Corporate Bond Portfolio | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.25%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.75% [3]
MSIFT Corporate Bond Portfolio - Classes I, A, L, and C | Corporate Bond Portfolio | Class L  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Corporate Bond Portfolio - Classes I, A, L, and C | Corporate Bond Portfolio | Class C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [4]
MSIFT Global Strategist Portfolio - Classes I, A, L, C and R6 | Global Strategist Portfolio | Class I  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Global Strategist Portfolio - Classes I, A, L, C and R6 | Global Strategist Portfolio | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.25%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [5]
MSIFT Global Strategist Portfolio - Classes I, A, L, C and R6 | Global Strategist Portfolio | Class L  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
MSIFT Global Strategist Portfolio - Classes I, A, L, C and R6 | Global Strategist Portfolio | Class C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [6]
[1]
1 Investments in Class A shares that are not subject to any sales charges at the time of purchase are subject to a contingent deferred sales charge (“CDSC”) of 1.00% that will be imposed if you sell your shares within 12 months after purchase, except for certain specific circumstances. See “Shareholder Information—How To Redeem Fund Shares” for further information about the CDSC waiver categories.
[2]
2 The Class C CDSC is only applicable if you sell your shares within one year after the last day of the month of purchase. See “Shareholder Information—How To Redeem Fund Shares” for a complete discussion of the CDSC.
[3]
1 Investments in Class A shares that are not subject to any sales charges at the time of purchase are subject to a contingent deferred sales charge (“CDSC”) of 0.75% that will be imposed if you sell your shares within 12 months except for certain specific circumstances. See “Shareholder Information—How To Redeem Fund Shares” for further information about the CDSC waiver categories.
[4]
2 The Class C CDSC is only applicable if you sell your shares within one year after the last day of the month of purchase. See “Shareholder Information—How To Redeem Fund Shares” for a complete discussion of the CDSC.
[5]
1 Investments in Class A shares that are not subject to any sales charges at the time of purchase are subject to a contingent deferred sales charge (“CDSC”) of 1.00% that will be imposed if you sell your shares within 12 months after purchase, except for certain specific circumstances. See “Shareholder Information—How To Redeem Fund Shares” for further information about the CDSC waiver categories.
[6]
2 The Class C CDSC is only applicable if you sell your shares within one year after the last day of the month of purchase. See “Shareholder Information—How To Redeem Fund Shares” for a complete discussion of the CDSC.