The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. In addition, different financial intermediary firms and financial professionals may impose different sales loads and waivers. More information about these and other discounts or waivers is available from your financial professional, in the "Information on Sales Charges" section starting on page 142 of the Prospectus and Appendix A – Intermediary-Specific Sales Charge Waivers and Discounts, and in the "Alternative Sales Arrangements" section on page 150 of the Statement of Additional Information.

Expense Breakpoint, Minimum Investment Required [Amount]

$ 50,000

Shareholder Fees [Table]

Shareholder Fees - Prospectus Summary - NYLI Winslow Large Cap Growth Fund	Class A		INVESTOR CLASS		Class C	Class I	Class R1	Class R2	Class R3	Class R6	SIMPLE CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.50%		5.00%		0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%	^[1]	0.00%	^[1]	1.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

[1]

No initial sales charge applies on investments of $1 million or more (and certain other qualified purchases referenced within “Information on Sales Charges” in the Shareholder Guide). However, a contingent deferred sales charge of 1.00% may be imposed on certain redemptions made within 18 months of the date of purchase on shares that were purchased without an initial sales charge. For more information on contingent deferred sales charges, see “Sales Charges” in the Shareholder Guide.

Annual Fund Operating Expenses [Table]

Annual Fund Operating Expenses - Prospectus Summary - NYLI Winslow Large Cap Growth Fund		Class A	INVESTOR CLASS	Class C	Class I	Class R1	Class R2	Class R3	Class R6	SIMPLE CLASS
Management Fees (as a percentage of Assets)	^[1]	0.61%	0.61%	0.61%	0.61%	0.61%	0.61%	0.61%	0.61%	0.61%
Distribution and Service (12b-1) Fees		0.25%	0.25%	1.00%	0.00%	0.00%	0.25%	0.50%	0.00%	0.50%
Other Expenses (as a percentage of Assets):		0.09%	0.25%	0.25%	0.09%	0.19%	0.19%	0.19%	0.03%	0.08%
Expenses (as a percentage of Assets)		0.95%	1.11%	1.86%	0.70%	0.80%	1.05%	1.30%	0.64%	1.19%
Fee Waiver or Reimbursement	^[2]	(0.01%)	(0.01%)	(0.01%)	(0.01%)	(0.01%)	(0.01%)	(0.01%)	(0.01%)	(0.01%)
Net Expenses (as a percentage of Assets)	^[2]	0.94%	1.10%	1.85%	0.69%	0.79%	1.04%	1.29%	0.63%	1.18%
Fee Waiver or Reimbursement over Assets, Date of Termination		February 28, 2027	February 28, 2027	February 28, 2027	February 28, 2027	February 28, 2027	February 28, 2027	February 28, 2027	February 28, 2027	February 28, 2027

[1]

The management fee is as follows: 0.75% on assets up to $500 million; 0.725% on assets from $500 million to $750 million; 0.71% on assets from $750 million to $1 billion; 0.70% on assets from $1 billion to $2 billion; 0.66% on assets from $2 billion to $3 billion; 0.61% on assets from $3 billion to $7 billion; 0.585% on assets from $7 billion to $9 billion; and 0.575% on assets over $9 billion.

[2]

New York Life Investment Management LLC (”New York Life Investment Management”) has contractually agreed to waive a portion of its management fee for the Fund so that the management fee does not exceed 0.550% on assets from $11 billion to $13 billion; and 0.525% on assets over $13 billion. This agreement will remain in effect until February 28, 2027, and shall renew automatically for one-year terms unless New York Life Investment Management provides written notice of termination prior to the start of the next term or upon approval of the Board of Trustees of the Fund.

Expense Example Narrative [Text Block]

The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated whether or not you redeem all of your shares at the end of those periods (except as indicated with respect to Class C shares). The Example reflects Class C shares converting into Investor Class shares in years 9-10; expenses could be lower if you are eligible to convert to Class A shares instead. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects the contractual fee waiver and/or expense reimbursement arrangement, if applicable, for the current duration of the arrangement only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, With Redemption [Table]

Expense Example - Prospectus Summary - NYLI Winslow Large Cap Growth Fund - USD ($)	Class A	INVESTOR CLASS	Class C	Class I	Class R1	Class R2	Class R3	Class R6	SIMPLE CLASS
Expense Example, with Redemption, 1 Year	$ 641	$ 607	$ 288	$ 70	$ 81	$ 106	$ 131	$ 64	$ 120
Expense Example, with Redemption, 3 Years	835	834	584	223	254	333	411	204	377
Expense Example, with Redemption, 5 Years	1,046	1,080	1,005	389	443	578	712	356	653
Expense Example, with Redemption, 10 Years	$ 1,651	$ 1,783	$ 1,983	$ 870	$ 989	$ 1,282	$ 1,567	$ 797	$ 1,442

Expense Example, No Redemption [Table]

Expense Example, No Redemption - Prospectus Summary - NYLI Winslow Large Cap Growth Fund	Class C USD ($)
Expense Example, No Redemption, 1 Year	$ 188
Expense Example, No Redemption, 3 Years	584
Expense Example, No Redemption, 5 Years	1,005
Expense Example, No Redemption, 10 Years	$ 1,983

Portfolio Turnover [Text Block]

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are

not reflected in annual fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 84% of the average value of its portfolio.

Expenses Deferred Charges [Text Block]

No initial sales charge applies on investments of $1 million or more (and certain other qualified purchases referenced within “Information on Sales Charges” in the Shareholder Guide). However, a contingent deferred sales charge of 1.00% may be imposed on certain redemptions made within 18 months of the date of purchase on shares that were purchased without an initial sales charge. For more information on contingent deferred sales charges, see “Sales Charges” in the Shareholder Guide.