Shareholder Report
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6 Months Ended |
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May 31, 2026
USD ($)
Holding
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| Shareholder Report [Line Items] |
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| Document Type |
N-CSRS
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| Amendment Flag |
false
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| Registrant Name |
BNY Mellon New York AMT-Free Municipal Bond Fund
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| Entity Central Index Key |
0000797920
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| Entity Investment Company Type |
N-1A
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| Document Period End Date |
May 31, 2026
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| C000246537 [Member] |
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| Shareholder Report [Line Items] |
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| Fund Name |
BNY Mellon New York AMT-Free Municipal Bond Fund
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|
| Class Name |
Class Z
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|
| Trading Symbol |
DNYAX
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| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about BNY Mellon New York AMT-Free Municipal Bond Fund (the “Fund”) for the period of December 1, 2025 to May 31, 2026.
|
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at bny.com/investments/literaturecenter. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
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| Additional Information Phone Number |
1-800-373-9387
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|
| Additional Information Email |
info@bny.com
|
|
| Additional Information Website |
bny.com/investments/literaturecenter
|
|
| Expenses [Text Block] |
What were the Fund’s costs for the last six months ? (based on a hypothetical $10,000 investment)
| Share Class |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Class Z |
$27 |
0.53%* |
|
|
| Expenses Paid, Amount |
$ 27
|
|
| Expense Ratio, Percent |
0.53%
|
[1] |
| Net Assets |
$ 842,000,000
|
|
| Holdings Count | Holding |
231
|
|
| Investment Company Portfolio Turnover |
9.45%
|
|
| Additional Fund Statistics [Text Block] |
KEY FUND STATISTICS (AS OF 5/31/26 )
Fund Size (Millions) |
Number of Holdings |
Portfolio Turnover |
| $842 |
231 |
9.45% |
|
|
| Holdings [Text Block] |
Portfolio Holdings (as of 5/31/26 ) Sector Allocation (Based on Net Assets)
|
|
| C000130310 [Member] |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
BNY Mellon New York AMT-Free Municipal Bond Fund
|
|
| Class Name |
Class Y
|
|
| Trading Symbol |
DNYYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about BNY Mellon New York AMT-Free Municipal Bond Fund (the “Fund”) for the period of December 1, 2025 to May 31, 2026.
|
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at bny.com/investments/literaturecenter. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
|
|
| Additional Information Phone Number |
1-800-373-9387
|
|
| Additional Information Email |
info@bny.com
|
|
| Additional Information Website |
bny.com/investments/literaturecenter
|
|
| Expenses [Text Block] |
What were the Fund’s costs for the last six months ? (based on a hypothetical $10,000 investment)
| Share Class |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Class Y |
$31 |
0.62%* |
|
|
| Expenses Paid, Amount |
$ 31
|
|
| Expense Ratio, Percent |
0.62%
|
[2] |
| Net Assets |
$ 842,000,000
|
|
| Holdings Count | Holding |
231
|
|
| Investment Company Portfolio Turnover |
9.45%
|
|
| Additional Fund Statistics [Text Block] |
KEY FUND STATISTICS (AS OF 5/31/26 )
Fund Size (Millions) |
Number of Holdings |
Portfolio Turnover |
| $842 |
231 |
9.45% |
|
|
| Holdings [Text Block] |
Portfolio Holdings (as of 5/31/26 ) Sector Allocation (Based on Net Assets)
|
|
| C000073393 [Member] |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
BNY Mellon New York AMT-Free Municipal Bond Fund
|
|
| Class Name |
Class I
|
|
| Trading Symbol |
DNYIX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about BNY Mellon New York AMT-Free Municipal Bond Fund (the “Fund”) for the period of December 1, 2025 to May 31, 2026.
|
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at bny.com/investments/literaturecenter. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
|
|
| Additional Information Phone Number |
1-800-373-9387
|
|
| Additional Information Email |
info@bny.com
|
|
| Additional Information Website |
bny.com/investments/literaturecenter
|
|
| Expenses [Text Block] |
What were the Fund’s costs for the last six months ? (based on a hypothetical $10,000 investment)
| Share Class |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Class I |
$27 |
0.54%* |
|
|
| Expenses Paid, Amount |
$ 27
|
|
| Expense Ratio, Percent |
0.54%
|
[3] |
| Net Assets |
$ 842,000,000
|
|
| Holdings Count | Holding |
231
|
|
| Investment Company Portfolio Turnover |
9.45%
|
|
| Additional Fund Statistics [Text Block] |
KEY FUND STATISTICS (AS OF 5/31/26 )
Fund Size (Millions) |
Number of Holdings |
Portfolio Turnover |
| $842 |
231 |
9.45% |
|
|
| Holdings [Text Block] |
Portfolio Holdings (as of 5/31/26 ) Sector Allocation (Based on Net Assets)
|
|
| C000000144 [Member] |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
BNY Mellon New York AMT-Free Municipal Bond Fund
|
|
| Class Name |
Class C
|
|
| Trading Symbol |
PNYCX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about BNY Mellon New York AMT-Free Municipal Bond Fund (the “Fund”) for the period of December 1, 2025 to May 31, 2026.
|
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at bny.com/investments/literaturecenter. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
|
|
| Additional Information Phone Number |
1-800-373-9387
|
|
| Additional Information Email |
info@bny.com
|
|
| Additional Information Website |
bny.com/investments/literaturecenter
|
|
| Expenses [Text Block] |
What were the Fund’s costs for the last six months ? (based on a hypothetical $10,000 investment)
| Share Class |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Class C |
$89 |
1.78%* |
|
|
| Expenses Paid, Amount |
$ 89
|
|
| Expense Ratio, Percent |
1.78%
|
[4] |
| Net Assets |
$ 842,000,000
|
|
| Holdings Count | Holding |
231
|
|
| Investment Company Portfolio Turnover |
9.45%
|
|
| Additional Fund Statistics [Text Block] |
KEY FUND STATISTICS (AS OF 5/31/26 )
Fund Size (Millions) |
Number of Holdings |
Portfolio Turnover |
| $842 |
231 |
9.45% |
|
|
| Holdings [Text Block] |
Portfolio Holdings (as of 5/31/26 ) Sector Allocation (Based on Net Assets)
|
|
| C000000142 [Member] |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
BNY Mellon New York AMT-Free Municipal Bond Fund
|
|
| Class Name |
Class A
|
|
| Trading Symbol |
PSNYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about BNY Mellon New York AMT-Free Municipal Bond Fund (the “Fund”) for the period of December 1, 2025 to May 31, 2026.
|
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at bny.com/investments/literaturecenter. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
|
|
| Additional Information Phone Number |
1-800-373-9387
|
|
| Additional Information Email |
info@bny.com
|
|
| Additional Information Website |
bny.com/investments/literaturecenter
|
|
| Expenses [Text Block] |
What were the Fund’s costs for the last six months ? (based on a hypothetical $10,000 investment)
| Share Class |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Class A |
$40 |
0.79%* |
|
|
| Expenses Paid, Amount |
$ 40
|
|
| Expense Ratio, Percent |
0.79%
|
[5] |
| Net Assets |
$ 842,000,000
|
|
| Holdings Count | Holding |
231
|
|
| Investment Company Portfolio Turnover |
9.45%
|
|
| Additional Fund Statistics [Text Block] |
KEY FUND STATISTICS (AS OF 5/31/26 )
Fund Size (Millions) |
Number of Holdings |
Portfolio Turnover |
| $842 |
231 |
9.45% |
|
|
| Holdings [Text Block] |
Portfolio Holdings (as of 5/31/26 ) Sector Allocation (Based on Net Assets)
|
|
|
|
