v3.25.2
Shareholder Report
 6 Months Ended
May 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name NEW YORK LIFE INVESTMENTS FUNDS TRUST
Entity Central Index Key 0001469192
Entity Investment Company Type N-1A
Document Period End Date May 31, 2025
C000142690 [Member]  
Shareholder Report [Line Items]  
Fund Name NYLI Cushing® MLP Premier Fund
Class Name Class A
Trading Symbol CSHAX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about NYLI Cushing® MLP Premier Fund (the "Fund") for the period December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at dfinview.com/NYLIM. You can also request this information by contacting us at 800-624-6782.
Additional Information Phone Number 800-624-6782
Additional Information Website dfinview.com/NYLIM
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment1
Class A $71 1.47%
1.
Annualized.
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.47% [1]
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund ’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 semiannual reporting periods of the Fund (or for the life of the Fund, if shorter). It assumes a $15,000 initial investment at the beginning of the first fiscal period in an appropriate, broad-based securities market index and other additional indexes, if applicable, for the same period and reflects the deduction of all sales charges, where applicable.
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns for the Period Ended May 31, 2025 Inception
Date		 Six
Months1		 One
Year		 Five
Years		 Ten
Years
Class A Shares - Including sales charges 10/20/2010 (11.57)% 15.90% 22.29% 3.42%
Class A Shares - Excluding sales charges (6.42)% 22.65% 23.69% 4.01%
Russell 3000®Index2 (2.44)% 13.12% 15.34% 12.21%
Alerian Midstream Energy Select Index3 (2.80)% 28.06% 25.12% 7.78%
Cushing MLP Premier Tiered Index4 (2.80)% 28.06% 23.70% 3.78%
Alerian MLP Index5 (3.12)% 15.24% 25.25% 4.43%
Morningstar Energy Limited Partnership Category Average6 26.17% 20.54% 23.38% 3.72%
1.
Not annualized.
2.
The Fund has selected the Russell 3000® Index to represent a broad measure of market performance. The Russell 3000® Index measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market.
3.
The Alerian Midstream Energy Select Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is a broad-based composite of North American energy infrastructure companies. The Alerian Midstream Energy Select Index is a capped, float-adjusted, capitalization weighted index, whose constituents earn the majority of their cash flow from midstream activities involving energy commodities.
4.
The returns for the tiered benchmark represent the returns of the Alerian MLP Index prior to December 1, 2020 and the returns of the Alerian Midstream Energy Select Index thereafter.
5.
The Alerian MLP Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is an unmanaged, capped, float-adjusted, capitalization-weighted index and a leading gauge of energy MLPs.
6.
The Morningstar Energy Limited Partnership Category Average is representative of funds that invest primarily a significant amount of their fund in energy master limited partnerships. These include but are not limited to limited partnerships specializing in midstream operations in the energy industry. Results are based on average total returns of similar funds with all dividends and capital gain distributions reinvested.
Performance Inception Date Oct. 20, 2010
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit newyorklifeinvestments.com/funds for the most recent performance information.
Net Assets $ 1,068,495,532
Holdings Count | Holding 29
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund's net assets $1,068,495,532%
Total number of portfolio holdings 29%
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings
The tables below show the investment makeup of the Fund; percentages indicated are based on the Fund's net assets.
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
Top Industries 
Large Cap Diversified C Corps  40.6%
Large Cap MLP  19.5%
Natural Gas Gatherers & Processors  18.2%
Natural Gas Transportation & Storage  5.4%
Crude Oil & Refined Products  3.6%
Other Corp  3.5%
Utility  3.1%
Refiners  2.9%
Canadian Midstream  1.7%
YieldCo  1.2%
Largest Holdings [Text Block]
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
C000142691 [Member]  
Shareholder Report [Line Items]  
Fund Name NYLI Cushing® MLP Premier Fund
Class Name Class C
Trading Symbol CSHCX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about NYLI Cushing® MLP Premier Fund (the "Fund") for the period December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at dfinview.com/NYLIM. You can also request this information by contacting us at 800-624-6782.
Additional Information Phone Number 800-624-6782
Additional Information Website dfinview.com/NYLIM
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment1
Class C $106 2.21%
1.
Annualized.
Expenses Paid, Amount $ 106
Expense Ratio, Percent 2.21% [2]
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund ’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 semiannual reporting periods of the Fund (or for the life of the Fund, if shorter). It assumes a $10,000 initial investment at the beginning of the first fiscal period in an appropriate, broad-based securities market index and other additional indexes, if applicable, for the same period and reflects the deduction of all sales charges, where applicable.
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns for the Period Ended May 31, 2025 Inception
Date		 Six
Months1		 One
Year		 Five
Years		 Ten
Years
Class C Shares - Including sales charges 10/20/2010 (7.77)% 20.72% 22.77% 3.21%
Class C Shares - Excluding sales charges (6.88)% 21.72% 22.77% 3.21%
Russell 3000®Index2 (2.44)% 13.12% 15.34% 12.21%
Alerian Midstream Energy Select Index3 (2.80)% 28.06% 25.12% 7.78%
Cushing MLP Premier Tiered Index4 (2.80)% 28.06% 23.70% 3.78%
Alerian MLP Index5 (3.12)% 15.24% 25.25% 4.43%
Morningstar Energy Limited Partnership Category Average6 26.17% 20.54% 23.38% 3.72%
1.
Not annualized.
2.
The Fund has selected the Russell 3000® Index to represent a broad measure of market performance. The Russell 3000® Index measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market.
3.
The Alerian Midstream Energy Select Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is a broad-based composite of North American energy infrastructure companies. The Alerian Midstream Energy Select Index is a capped, float-adjusted, capitalization weighted index, whose constituents earn the majority of their cash flow from midstream activities involving energy commodities.
4.
The returns for the tiered benchmark represent the returns of the Alerian MLP Index prior to December 1, 2020 and the returns of the Alerian Midstream Energy Select Index thereafter.
5.
The Alerian MLP Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is an unmanaged, capped, float-adjusted, capitalization-weighted index and a leading gauge of energy MLPs.
6.
The Morningstar Energy Limited Partnership Category Average is representative of funds that invest primarily a significant amount of their fund in energy master limited partnerships. These include but are not limited to limited partnerships specializing in midstream operations in the energy industry. Results are based on average total returns of similar funds with all dividends and capital gain distributions reinvested.
Performance Inception Date Oct. 20, 2010
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit newyorklifeinvestments.com/funds for the most recent performance information.
Net Assets $ 1,068,495,532
Holdings Count | Holding 29
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund's net assets $1,068,495,532%
Total number of portfolio holdings 29%
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings
The tables below show the investment makeup of the Fund; percentages indicated are based on the Fund's net assets.
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
Top Industries 
Large Cap Diversified C Corps  40.6%
Large Cap MLP  19.5%
Natural Gas Gatherers & Processors  18.2%
Natural Gas Transportation & Storage  5.4%
Crude Oil & Refined Products  3.6%
Other Corp  3.5%
Utility  3.1%
Refiners  2.9%
Canadian Midstream  1.7%
YieldCo  1.2%
Largest Holdings [Text Block]
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
C000142692 [Member]  
Shareholder Report [Line Items]  
Fund Name NYLI Cushing® MLP Premier Fund
Class Name Class I
Trading Symbol CSHZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about NYLI Cushing® MLP Premier Fund (the "Fund") for the period December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at dfinview.com/NYLIM. You can also request this information by contacting us at 800-624-6782.
Additional Information Phone Number 800-624-6782
Additional Information Website dfinview.com/NYLIM
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment1
Class I $59 1.22%
1.
Annualized.
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.22% [3]
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund ’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 semiannual reporting periods of the Fund (or for the life of the Fund, if shorter). It assumes a $10,000 initial investment at the beginning of the first fiscal period in an appropriate, broad-based securities market index and other additional indexes, if applicable, for the same period and reflects the deduction of all sales charges, where applicable.
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns for the Period Ended May 31, 2025 Inception
Date		 Six
Months1		 One
Year		 Five
Years		 Ten
Years
Class I Shares 10/20/2010 (6.34)% 22.96% 23.97% 4.26%
Russell 3000®Index2 (2.44)% 13.12% 15.34% 12.21%
Alerian Midstream Energy Select Index3 (2.80)% 28.06% 25.12% 7.78%
Cushing MLP Premier Tiered Index4 (2.80)% 28.06% 23.70% 3.78%
Alerian MLP Index5 (3.12)% 15.24% 25.25% 4.43%
Morningstar Energy Limited Partnership Category Average6 26.17% 20.54% 23.38% 3.72%
1.
Not annualized.
2.
The Fund has selected the Russell 3000® Index to represent a broad measure of market performance. The Russell 3000® Index measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market.
3.
The Alerian Midstream Energy Select Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is a broad-based composite of North American energy infrastructure companies. The Alerian Midstream Energy Select Index is a capped, float-adjusted, capitalization weighted index, whose constituents earn the majority of their cash flow from midstream activities involving energy commodities.
4.
The returns for the tiered benchmark represent the returns of the Alerian MLP Index prior to December 1, 2020 and the returns of the Alerian Midstream Energy Select Index thereafter.
5.
The Alerian MLP Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is an unmanaged, capped, float-adjusted, capitalization-weighted index and a leading gauge of energy MLPs.
6.
The Morningstar Energy Limited Partnership Category Average is representative of funds that invest primarily a significant amount of their fund in energy master limited partnerships. These include but are not limited to limited partnerships specializing in midstream operations in the energy industry. Results are based on average total returns of similar funds with all dividends and capital gain distributions reinvested.
Performance Inception Date Oct. 20, 2010
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit newyorklifeinvestments.com/funds for the most recent performance information.
Net Assets $ 1,068,495,532
Holdings Count | Holding 29
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund's net assets $1,068,495,532%
Total number of portfolio holdings 29%
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings
The tables below show the investment makeup of the Fund; percentages indicated are based on the Fund's net assets.
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
Top Industries 
Large Cap Diversified C Corps  40.6%
Large Cap MLP  19.5%
Natural Gas Gatherers & Processors  18.2%
Natural Gas Transportation & Storage  5.4%
Crude Oil & Refined Products  3.6%
Other Corp  3.5%
Utility  3.1%
Refiners  2.9%
Canadian Midstream  1.7%
YieldCo  1.2%
Largest Holdings [Text Block]
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
C000142693 [Member]  
Shareholder Report [Line Items]  
Fund Name NYLI Cushing® MLP Premier Fund
Class Name Investor Class
Trading Symbol CSHNX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about NYLI Cushing® MLP Premier Fund (the "Fund") for the period December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at dfinview.com/NYLIM. You can also request this information by contacting us at 800-624-6782.
Additional Information Phone Number 800-624-6782
Additional Information Website dfinview.com/NYLIM
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment1
Investor Class $70 1.46%
1.
Annualized.
Expenses Paid, Amount $ 70
Expense Ratio, Percent 1.46% [4]
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund ’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 semiannual reporting periods of the Fund (or for the life of the Fund, if shorter). It assumes a $10,000 initial investment at the beginning of the first fiscal period in an appropriate, broad-based securities market index and other additional indexes, if applicable, for the same period and reflects the deduction of all sales charges, where applicable.
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns for the Period Ended May 31, 2025 Inception
Date		 Six
Months1		 One
Year		 Five
Years		 Ten
Years
Investor Class Shares - Including sales charges 7/11/2014 (11.16)% 16.45% 22.30% 3.43%
Investor Class Shares - Excluding sales charges (6.48)% 22.58% 23.69% 4.02%
Russell 3000®Index2 (2.44)% 13.12% 15.34% 12.21%
Alerian Midstream Energy Select Index3 (2.80)% 28.06% 25.12% 7.78%
Cushing MLP Premier Tiered Index4 (2.80)% 28.06% 23.70% 3.78%
Alerian MLP Index5 (3.12)% 15.24% 25.25% 4.43%
Morningstar Energy Limited Partnership Category Average6 26.17% 20.54% 23.38% 3.72%
1.
Not annualized.
2.
The Fund has selected the Russell 3000® Index to represent a broad measure of market performance. The Russell 3000® Index measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market.
3.
The Alerian Midstream Energy Select Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is a broad-based composite of North American energy infrastructure companies. The Alerian Midstream Energy Select Index is a capped, float-adjusted, capitalization weighted index, whose constituents earn the majority of their cash flow from midstream activities involving energy commodities.
4.
The returns for the tiered benchmark represent the returns of the Alerian MLP Index prior to December 1, 2020 and the returns of the Alerian Midstream Energy Select Index thereafter.
5.
The Alerian MLP Index, which is generally representative of the market sectors or types of investments in which the Fund invests, is an unmanaged, capped, float-adjusted, capitalization-weighted index and a leading gauge of energy MLPs.
6.
The Morningstar Energy Limited Partnership Category Average is representative of funds that invest primarily a significant amount of their fund in energy master limited partnerships. These include but are not limited to limited partnerships specializing in midstream operations in the energy industry. Results are based on average total returns of similar funds with all dividends and capital gain distributions reinvested.
Performance Inception Date Jul. 11, 2014
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit newyorklifeinvestments.com/funds for the most recent performance information.
Net Assets $ 1,068,495,532
Holdings Count | Holding 29
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund's net assets $1,068,495,532%
Total number of portfolio holdings 29%
Portfolio turnover rate 12%
Holdings [Text Block]
Graphical Representation of Holdings
The tables below show the investment makeup of the Fund; percentages indicated are based on the Fund's net assets.
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
Top Industries 
Large Cap Diversified C Corps  40.6%
Large Cap MLP  19.5%
Natural Gas Gatherers & Processors  18.2%
Natural Gas Transportation & Storage  5.4%
Crude Oil & Refined Products  3.6%
Other Corp  3.5%
Utility  3.1%
Refiners  2.9%
Canadian Midstream  1.7%
YieldCo  1.2%
Largest Holdings [Text Block]
Top Ten Holdings and/or Issuers*
Energy Transfer LP 9.1%
Cheniere Energy, Inc. 7.8%
ONEOK, Inc. 7.7%
Targa Resources Corp. 7.4%
MPLX LP 5.7%
Hess Midstream LP, Class A 5.5%
DT Midstream, Inc. 5.4%
Williams Cos., Inc. (The) 4.9%
Kinder Morgan, Inc. 4.9%
TC Energy Corp. 4.7%
* Excluding short-term investments
[1] Annualized.
[2] Annualized.
[3] Annualized.
[4] Annualized.