v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name BNY Mellon Investment Portfolios
Entity Central Index Key 0001056707
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
C000007612 [Member]  
Shareholder Report [Line Items]  
Fund Name MidCap Stock Portfolio
Class Name Service Shares
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about BNY Mellon Investment Portfolios, MidCap Stock Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1. 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 www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1
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
Service Shares* $57 1.05%**
*
During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund’s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
**
Annualized.
Expenses Paid, Amount $ 57 [1]
Expense Ratio, Percent 1.05% [1],[2]
Net Assets $ 173,000,000
Holdings Count | Holding 272
Investment Company Portfolio Turnover 38.58%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 6/30/26 )

Fund Size (Millions)
Number of Holdings
Portfolio Turnover
$173 272 38.58%
Holdings [Text Block]
Portfolio Holdings (as of 6/30/26 )
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
C000007611 [Member]  
Shareholder Report [Line Items]  
Fund Name MidCap Stock Portfolio
Class Name Initial Shares
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about BNY Mellon Investment Portfolios, MidCap Stock Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1. 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 www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1
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
Initial Shares* $43 0.80%**
*
During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund’s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
**
Annualized.
Expenses Paid, Amount $ 43 [3]
Expense Ratio, Percent 0.80% [3],[4]
Net Assets $ 173,000,000
Holdings Count | Holding 272
Investment Company Portfolio Turnover 38.58%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 6/30/26 )

Fund Size (Millions)
Number of Holdings
Portfolio Turnover
$173 272 38.58%
Holdings [Text Block]
Portfolio Holdings (as of 6/30/26 )
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
C000007613 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Stock Index Portfolio
Class Name Service Shares
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about BNY Mellon Investment Portfolios, Small Cap Stock Index Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1. 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 www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1
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
Service Shares* $33 0.60%**
*
During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund’s investment adviser, BNY Mellon Investment Adviser, Inc.
**
Annualized.
Expenses Paid, Amount $ 33 [5]
Expense Ratio, Percent 0.60% [5],[6]
Net Assets $ 620,000,000
Holdings Count | Holding 608
Investment Company Portfolio Turnover 27.14%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 6/30/26 )

Fund Size (Millions)
Number of Holdings
Portfolio Turnover
$620 608 27.14%
Holdings [Text Block]
Portfolio Holdings (as of 6/30/26 )
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
C000007615 [Member]  
Shareholder Report [Line Items]  
Fund Name Technology Growth Portfolio
Class Name Service Shares
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about BNY Mellon Investment Portfolios, Technology Growth Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1. 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 www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1
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
Service Shares $66 1.12%*
*
Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.12% [7]
Net Assets $ 223,000,000
Holdings Count | Holding 37
Investment Company Portfolio Turnover 22.73%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 6/30/26 )

Fund Size (Millions)
Number of Holdings
Portfolio Turnover
$223 37 22.73%
Holdings [Text Block]
Portfolio Holdings (as of 6/30/26 )
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Graphical Representation - Allocation 1 Chart
* Amount represents less than .1%.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
C000007614 [Member]  
Shareholder Report [Line Items]  
Fund Name Technology Growth Portfolio
Class Name Initial Shares
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about BNY Mellon Investment Portfolios, Technology Growth Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1. 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 www.bny.com/investments/us/en/intermediary/products/variable‑products.html#funds‑table‑tabs1
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
Initial Shares $51 0.87%*
*
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.87% [8]
Net Assets $ 223,000,000
Holdings Count | Holding 37
Investment Company Portfolio Turnover 22.73%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 6/30/26 )

Fund Size (Millions)
Number of Holdings
Portfolio Turnover
$223 37 22.73%
Holdings [Text Block]
Portfolio Holdings (as of 6/30/26 )
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Graphical Representation - Allocation 1 Chart
* Amount represents less than .1%.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets) *
Graphical Representation - Top N Holdings Chart
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
[1]
During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund’s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
[2]
Annualized.
[3]
During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund’s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
[4]
Annualized.
[5]
During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund’s investment adviser, BNY Mellon Investment Adviser, Inc.
[6]
Annualized.
[7]
Annualized.
[8]
Annualized.