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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Voya MUTUAL FUNDS
Prospectus Date rr_ProspectusDate Feb. 28, 2018
Supplement [Text Block] vmf_SupplementTextBlock
VOYA MUTUAL FUNDS
Voya Global Equity Fund
Voya International High Dividend Low Volatility Fund (formerly, Voya Global High Dividend Low Volatility Fund)
(each a "Fund" and collectively the "Funds")
Supplement dated May 24, 2018
To Voya Global Equity Fund's Class A, Class C, Class I, Class T, and Class W shares Prospectus and
Voya International High Dividend Low Volatility Fund's Class A, Class I, and Class T shares Prospectus, each dated February 28, 2018
(each a "Prospectus" and collectively the "Prospectuses")
Effective May 1, 2018 Voya Global Equity Fund's primary benchmark index was changed from the MSCI All Country World IndexSM to the MSCI World IndexSM and Voya International High Dividend Low Volatility Fund's primary benchmark changed from the MSCI World IndexSM to the MSCI EAFE® Index. Effective immediately the Funds' Prospectuses are revised as follows:
1.The sub-section entitled "Performance Information – Average Annual Total Returns" of each Fund's Prospectuses is deleted and replaced with the following:
VOYA GLOBAL EQUITY FUND
Average Annual Total Returns %
(for the periods ended December 31, 2017)
  1 Yr5 Yrs10 YrsSince
Inception
Inception
Date
Class A before taxes%17.177.025.19N/A04/19/93
After tax on distributions%16.486.464.65N/A 
After tax on distributions with sale%9.985.434.09N/A 
MSCI World IndexSM1,2%22.4011.645.03N/A 
MSCI ACW IndexSM1,2%23.9710.804.65N/A 
Class C before taxes%22.387.495.02N/A04/19/93
MSCI World IndexSM1,2%22.4011.645.03N/A 
MSCI ACW IndexSM1,2%23.9710.804.65N/A 
Class I before taxes%24.608.576.11N/A09/06/06
MSCI World IndexSM1,2%22.4011.645.03N/A 
MSCI ACW IndexSM1,2%23.9710.804.65N/A 
Class W before taxes%24.648.576.05N/A06/01/09
MSCI World IndexSM1,2%22.4011.64N/A11.35 
MSCI ACW IndexSM1,2%23.9710.80N/A10.84 
1Effective May 1, 2018 the Fund changed its benchmark from the MSCI ACW IndexSM to the MSCI World IndexSM because the MSCI World IndexSM is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
2The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
VOYA INTERNATIONAL HIGH DIVIDEND LOW VOLATILITY FUND
Average Annual Total Returns %
(for the periods ended December 31, 2017)
  1 Yr5 Yrs10 YrsSince
Inception
Inception
Date
Class A before taxes%13.08N/AN/A13.8712/06/16
After tax on distributions%11.21N/AN/A11.91 
After tax on distributions with sale%8.01N/AN/A9.98 
MSCI EAFE® Index1,2%25.03N/AN/A25.53 
MSCI World IndexSM1,2%22.40N/AN/A22.49 
Class I before taxes%20.36N/AN/A20.7312/06/16
MSCI EAFE® Index1,2%25.03N/AN/A25.53 
MSCI World IndexSM1,2%22.40N/AN/A22.49 
1Effective May 1, 2018 the Fund changed its benchmark from the MSCI World IndexSM to the MSCI EAFE® Index because the MSCI EAFE® Index is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
2The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
Voya Global Equity Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] vmf_SupplementTextBlock
VOYA MUTUAL FUNDS
Voya Global Equity Fund
(each a "Fund" and collectively the "Funds")
Supplement dated May 24, 2018
To Voya Global Equity Fund's Class A, Class C, Class I, Class T, and Class W shares Prospectus
(each a "Prospectus" and collectively the "Prospectuses")
Effective May 1, 2018 Voya Global Equity Fund's primary benchmark index was changed from the MSCI All Country World IndexSM to the MSCI World IndexSM and Voya International High Dividend Low Volatility Fund's primary benchmark changed from the MSCI World IndexSM to the MSCI EAFE® Index. Effective immediately the Funds' Prospectuses are revised as follows:
1.The sub-section entitled "Performance Information – Average Annual Total Returns" of each Fund's Prospectuses is deleted and replaced with the following:
VOYA GLOBAL EQUITY FUND
Average Annual Total Returns %
(for the periods ended December 31, 2017)
  1 Yr5 Yrs10 YrsSince
Inception
Inception
Date
Class A before taxes%17.177.025.19N/A04/19/93
After tax on distributions%16.486.464.65N/A 
After tax on distributions with sale%9.985.434.09N/A 
MSCI World IndexSM1,2%22.4011.645.03N/A 
MSCI ACW IndexSM1,2%23.9710.804.65N/A 
Class C before taxes%22.387.495.02N/A04/19/93
MSCI World IndexSM1,2%22.4011.645.03N/A 
MSCI ACW IndexSM1,2%23.9710.804.65N/A 
Class I before taxes%24.608.576.11N/A09/06/06
MSCI World IndexSM1,2%22.4011.645.03N/A 
MSCI ACW IndexSM1,2%23.9710.804.65N/A 
Class W before taxes%24.648.576.05N/A06/01/09
MSCI World IndexSM1,2%22.4011.64N/A11.35 
MSCI ACW IndexSM1,2%23.9710.80N/A10.84 
1Effective May 1, 2018 the Fund changed its benchmark from the MSCI ACW IndexSM to the MSCI World IndexSM because the MSCI World IndexSM is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
2The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns %
(for the periods ended December 31, 2017)
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged Effective May 1, 2018 the Fund changed its benchmark from the MSCI ACW IndexSM to the MSCI World IndexSM because the MSCI World IndexSM is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
Voya Global Equity Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 17.17%
5 Yrs rr_AverageAnnualReturnYear05 7.02%
10 Yrs rr_AverageAnnualReturnYear10 5.19%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 19, 1993
Voya Global Equity Fund | Class C  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.38%
5 Yrs rr_AverageAnnualReturnYear05 7.49%
10 Yrs rr_AverageAnnualReturnYear10 5.02%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 19, 1993
Voya Global Equity Fund | Class I  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 24.60%
5 Yrs rr_AverageAnnualReturnYear05 8.57%
10 Yrs rr_AverageAnnualReturnYear10 6.11%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 06, 2006
Voya Global Equity Fund | Class W  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 24.64%
5 Yrs rr_AverageAnnualReturnYear05 8.57%
10 Yrs rr_AverageAnnualReturnYear10 6.05%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 01, 2009
Voya Global Equity Fund | After tax on distributions | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 16.48%
5 Yrs rr_AverageAnnualReturnYear05 6.46%
10 Yrs rr_AverageAnnualReturnYear10 4.65%
Since Inception rr_AverageAnnualReturnSinceInception
Voya Global Equity Fund | After tax on distributions with sale | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 9.98%
5 Yrs rr_AverageAnnualReturnYear05 5.43%
10 Yrs rr_AverageAnnualReturnYear10 4.09%
Since Inception rr_AverageAnnualReturnSinceInception
Voya Global Equity Fund | MSCI World Index℠ | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.40% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 11.64% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 5.03% [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception [1],[2]
Voya Global Equity Fund | MSCI World Index℠ | Class C  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.40% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 11.64% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 5.03% [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception [1],[2]
Voya Global Equity Fund | MSCI World Index℠ | Class I  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.40% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 11.64% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 5.03% [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception [1],[2]
Voya Global Equity Fund | MSCI World Index℠ | Class W  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.40% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 11.64% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception 11.35% [1],[2]
Voya Global Equity Fund | MSCI ACW Index℠ | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 23.97% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 10.80% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 4.65% [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception [1],[2]
Voya Global Equity Fund | MSCI ACW Index℠ | Class C  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 23.97% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 10.80% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 4.65% [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception [1],[2]
Voya Global Equity Fund | MSCI ACW Index℠ | Class I  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 23.97% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 10.80% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 4.65% [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception [1],[2]
Voya Global Equity Fund | MSCI ACW Index℠ | Class W  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 23.97% [1],[2]
5 Yrs rr_AverageAnnualReturnYear05 10.80% [1],[2]
10 Yrs rr_AverageAnnualReturnYear10 [1],[2]
Since Inception rr_AverageAnnualReturnSinceInception 10.84% [1],[2]
Voya International High Dividend Low Volatility Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] vmf_SupplementTextBlock
VOYA MUTUAL FUNDS

Voya International High Dividend Low Volatility Fund (formerly, Voya Global High Dividend Low Volatility Fund)
(each a "Fund" and collectively the "Funds")
Supplement dated May 24, 2018
Voya International High Dividend Low Volatility Fund's Class A, Class I, and Class T shares Prospectus, each dated February 28, 2018
(each a "Prospectus" and collectively the "Prospectuses")
Effective May 1, 2018 Voya Global Equity Fund's primary benchmark index was changed from the MSCI All Country World IndexSM to the MSCI World IndexSM and Voya International High Dividend Low Volatility Fund's primary benchmark changed from the MSCI World IndexSM to the MSCI EAFE® Index. Effective immediately the Funds' Prospectuses are revised as follows:
1.The sub-section entitled "Performance Information — Average Annual Total Returns" of each Fund's Prospectuses is deleted and replaced with the following:
VOYA INTERNATIONAL HIGH DIVIDEND LOW VOLATILITY FUND
Average Annual Total Returns %
(for the periods ended December 31, 2017)
  1 Yr5 Yrs10 YrsSince
Inception
Inception
Date
Class A before taxes%13.08N/AN/A13.8712/06/16
After tax on distributions%11.21N/AN/A11.91 
After tax on distributions with sale%8.01N/AN/A9.98 
MSCI EAFE® Index1,2%25.03N/AN/A25.53 
MSCI World IndexSM1,2%22.40N/AN/A22.49 
Class I before taxes%20.36N/AN/A20.7312/06/16
MSCI EAFE® Index1,2%25.03N/AN/A25.53 
MSCI World IndexSM1,2%22.40N/AN/A22.49 
1Effective May 1, 2018 the Fund changed its benchmark from the MSCI World IndexSM to the MSCI EAFE® Index because the MSCI EAFE® Index is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
2The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns %
(for the periods ended December 31, 2017)
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged Effective May 1, 2018 the Fund changed its benchmark from the MSCI World IndexSM to the MSCI EAFE® Index because the MSCI EAFE® Index is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
Voya International High Dividend Low Volatility Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 13.08%
5 Yrs rr_AverageAnnualReturnYear05
10 Yrs rr_AverageAnnualReturnYear10
Since Inception rr_AverageAnnualReturnSinceInception 13.87%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 06, 2016
Voya International High Dividend Low Volatility Fund | Class I  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 20.36%
5 Yrs rr_AverageAnnualReturnYear05
10 Yrs rr_AverageAnnualReturnYear10
Since Inception rr_AverageAnnualReturnSinceInception 20.73%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 06, 2016
Voya International High Dividend Low Volatility Fund | After tax on distributions | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 11.21%
5 Yrs rr_AverageAnnualReturnYear05
10 Yrs rr_AverageAnnualReturnYear10
Since Inception rr_AverageAnnualReturnSinceInception 11.91%
Voya International High Dividend Low Volatility Fund | After tax on distributions with sale | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 8.01%
5 Yrs rr_AverageAnnualReturnYear05
10 Yrs rr_AverageAnnualReturnYear10
Since Inception rr_AverageAnnualReturnSinceInception 9.98%
Voya International High Dividend Low Volatility Fund | MSCI EAFE® Index | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 25.03% [2],[3]
5 Yrs rr_AverageAnnualReturnYear05 [2],[3]
10 Yrs rr_AverageAnnualReturnYear10 [2],[3]
Since Inception rr_AverageAnnualReturnSinceInception 25.53% [2],[3]
Voya International High Dividend Low Volatility Fund | MSCI EAFE® Index | Class I  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 25.03% [2],[3]
5 Yrs rr_AverageAnnualReturnYear05 [2],[3]
10 Yrs rr_AverageAnnualReturnYear10 [2],[3]
Since Inception rr_AverageAnnualReturnSinceInception 25.53% [2],[3]
Voya International High Dividend Low Volatility Fund | MSCI World Index℠ | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.40% [2],[3]
5 Yrs rr_AverageAnnualReturnYear05 [2],[3]
10 Yrs rr_AverageAnnualReturnYear10 [2],[3]
Since Inception rr_AverageAnnualReturnSinceInception 22.49% [2],[3]
Voya International High Dividend Low Volatility Fund | MSCI World Index℠ | Class I  
Risk/Return: rr_RiskReturnAbstract  
1 Yr rr_AverageAnnualReturnYear01 22.40% [2],[3]
5 Yrs rr_AverageAnnualReturnYear05 [2],[3]
10 Yrs rr_AverageAnnualReturnYear10 [2],[3]
Since Inception rr_AverageAnnualReturnSinceInception 22.49% [2],[3]
[1] Effective May 1, 2018 the Fund changed its benchmark from the MSCI ACW Index℠ to the MSCI World Index℠ because the MSCI World Index℠ is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.
[2] The index returns include the reinvestment of dividends and distributions net of withholding taxes, but do not reflect fees, brokerage commissions, or other expenses.
[3] Effective May 1, 2018 the Fund changed its benchmark from the MSCI World Index℠ to the MSCI EAFE® Index because the MSCI EAFE® Index is considered by the Sub-Adviser to be a more appropriate benchmark reflecting the type of securities in which the Fund invests.