v3.26.1
Fees and Expenses
Apr. 30, 2026
USD ($)
FRANKLIN GROWTH OPPORTUNITIES FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 85 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 54 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 25,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN GROWTH OPPORTUNITIES FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 1.00% 0.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $1 Million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - FRANKLIN GROWTH OPPORTUNITIES FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.54% 0.54% 0.54% 0.54% 0.54%
Distribution and Service (12b-1) Fees 0.25% 1.00% 0.50% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.10% 0.10% 0.10% 0.03% 0.10%
Expenses (as a percentage of Assets) 0.89% 1.64% 1.14% 0.57% 0.64%
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This 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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN GROWTH OPPORTUNITIES FUND - USD ($)
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 636 $ 267 $ 116 $ 58 $ 65
Expense Example, with Redemption, 3 Years 818 517 362 183 204
Expense Example, with Redemption, 5 Years 1,016 891 627 318 356
Expense Example, with Redemption, 10 Years $ 1,585 $ 1,742 $ 1,384 $ 713 $ 797
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN GROWTH OPPORTUNITIES FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 167
Expense Example, No Redemption, 3 Years 517
Expense Example, No Redemption, 5 Years 891
Expense Example, No Redemption, 10 Years $ 1,742
Portfolio Turnover [Heading] Portfolio Turnover
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 39.14% of the average value of its portfolio.
Portfolio Turnover, Rate 39.14%
FRANKLIN SMALL CAP GROWTH FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 85 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 54 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 25,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN SMALL CAP GROWTH FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 1.00% 0.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $1 Million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - FRANKLIN SMALL CAP GROWTH FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.62% 0.62% 0.62% 0.62% 0.62%
Distribution and Service (12b-1) Fees 0.25% 1.00% 0.50% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.20% 0.20% 0.20% 0.05% 0.20%
Expenses (as a percentage of Assets) 1.07% 1.82% 1.32% 0.67% 0.82%
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This 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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN SMALL CAP GROWTH FUND - USD ($)
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 653 $ 285 $ 134 $ 68 $ 84
Expense Example, with Redemption, 3 Years 871 573 418 214 262
Expense Example, with Redemption, 5 Years 1,107 986 723 373 456
Expense Example, with Redemption, 10 Years $ 1,783 $ 1,941 $ 1,589 $ 834 $ 1,015
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN SMALL CAP GROWTH FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 185
Expense Example, No Redemption, 3 Years 573
Expense Example, No Redemption, 5 Years 986
Expense Example, No Redemption, 10 Years $ 1,941
Portfolio Turnover [Heading] Portfolio Turnover
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 48.01% of the average value of its portfolio.
Portfolio Turnover, Rate 48.01%
FRANKLIN SMALL-MID CAP GROWTH FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 85 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 54 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 25,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN SMALL-MID CAP GROWTH FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 1.00% 0.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $1 Million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - FRANKLIN SMALL-MID CAP GROWTH FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.46% 0.46% 0.46% 0.46% 0.46%
Distribution and Service (12b-1) Fees 0.25% 1.00% 0.50% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.14% 0.14% 0.14% 0.05% 0.14%
Expenses (as a percentage of Assets) 0.85% 1.60% 1.10% 0.51% 0.60%
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This 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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN SMALL-MID CAP GROWTH FUND - USD ($)
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 632 $ 263 $ 112 $ 52 $ 61
Expense Example, with Redemption, 3 Years 806 505 350 163 192
Expense Example, with Redemption, 5 Years 995 871 607 284 335
Expense Example, with Redemption, 10 Years $ 1,541 $ 1,699 $ 1,341 $ 639 $ 750
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN SMALL-MID CAP GROWTH FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 163
Expense Example, No Redemption, 3 Years 505
Expense Example, No Redemption, 5 Years 871
Expense Example, No Redemption, 10 Years $ 1,699
Portfolio Turnover [Heading] Portfolio Turnover
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 32.96% of the average value of its portfolio.
Portfolio Turnover, Rate 32.96%
FRANKLIN BIOTECHNOLOGY DISCOVERY FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 61 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 61 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 25,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN BIOTECHNOLOGY DISCOVERY FUND
CLASS A
Class C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $1 Million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - FRANKLIN BIOTECHNOLOGY DISCOVERY FUND
CLASS A
Class C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.61% 0.61% 0.61% 0.61%
Distribution and Service (12b-1) Fees 0.25% 1.00% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.16% 0.16% 0.17% 0.16%
Expenses (as a percentage of Assets) 1.02% 1.77% 0.78% 0.77%
Fee Waiver or Reimbursement [1] (0.01%) (0.01%) (0.11%) (0.01%)
Net Expenses (as a percentage of Assets) 1.01% 1.76% 0.67% 0.76%
Fee Waiver or Reimbursement over Assets, Date of Termination August 31, 2027 August 31, 2027 August 31, 2027 August 31, 2027
[1] The investment manager has agreed to reduce its fees to reflect reduced services resulting from the Fund’s investments in Franklin Templeton affiliated funds. In addition, the transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until August 31, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This 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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN BIOTECHNOLOGY DISCOVERY FUND - USD ($)
CLASS A
Class C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 647 $ 279 $ 68 $ 78
Expense Example, with Redemption, 3 Years 855 557 238 245
Expense Example, with Redemption, 5 Years 1,081 959 422 427
Expense Example, with Redemption, 10 Years $ 1,728 $ 1,887 $ 955 $ 954
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN BIOTECHNOLOGY DISCOVERY FUND
Class C
USD ($)
Expense Example, No Redemption, 1 Year $ 179
Expense Example, No Redemption, 3 Years 557
Expense Example, No Redemption, 5 Years 959
Expense Example, No Redemption, 10 Years $ 1,887
Portfolio Turnover [Heading] Portfolio Turnover
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 37.62% of the average value of its portfolio.
Portfolio Turnover, Rate 37.62%
FRANKLIN NATURAL RESOURCES FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 61 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 61 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $25,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 25,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN NATURAL RESOURCES FUND
CLASS A
CLASS C
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.50% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 1.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $1 Million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - FRANKLIN NATURAL RESOURCES FUND
CLASS A
CLASS C
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.51% 0.51% 0.51% 0.51%
Distribution and Service (12b-1) Fees 0.25% 1.00% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.21% 0.21% 0.13% 0.20%
Expenses (as a percentage of Assets) 0.97% 1.72% 0.64% 0.71%
Fee Waiver or Reimbursement [1] (0.01%) (0.01%) (0.05%) (0.01%)
Net Expenses (as a percentage of Assets) 0.96% 1.71% 0.59% 0.70%
Fee Waiver or Reimbursement over Assets, Date of Termination August 31, 2027 August 31, 2027 August 31, 2027 August 31, 2027
[1] The investment manager has agreed to reduce its fees to reflect reduced services resulting from the Fund’s investments in Franklin Templeton affiliated funds. In addition, the transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until August 31, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This 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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN NATURAL RESOURCES FUND - USD ($)
CLASS A
CLASS C
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 643 $ 274 $ 60 $ 72
Expense Example, with Redemption, 3 Years 841 541 199 227
Expense Example, with Redemption, 5 Years 1,056 933 351 395
Expense Example, with Redemption, 10 Years $ 1,673 $ 1,830 $ 793 $ 881
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN NATURAL RESOURCES FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 174
Expense Example, No Redemption, 3 Years 541
Expense Example, No Redemption, 5 Years 933
Expense Example, No Redemption, 10 Years $ 1,830
Portfolio Turnover [Heading] Portfolio Turnover
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 27.09% of the average value of its portfolio.
Portfolio Turnover, Rate 27.09%
FRANKLIN CORE PLUS BOND FUND  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees (including on Class R6 and Advisor Class shares), such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor. More information about these and other discounts is available from your financial professional and under “Your Account” on page 51 in the Fund’s Prospectus and under “Buying and Selling Shares” on page 88 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A – “Intermediary Sales Charge Discounts and Waivers” to the Fund’s prospectus.
Expense Breakpoint Discounts [Text] You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $100,000 in Franklin Templeton funds and certain other funds distributed through Franklin Distributors, LLC, the Fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount] $ 100,000
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees - FRANKLIN CORE PLUS BOND FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 3.75% 0.00% 0.00% 0.00% 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1] 1.00% 0.00% 0.00% 0.00%
[1]

There is a 1% contingent deferred sales charge that applies to investments of $500,000 or more (see "Investments of $500,000 or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - FRANKLIN CORE PLUS BOND FUND
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Management Fees (as a percentage of Assets) 0.35% 0.35% 0.35% 0.35% 0.35%
Distribution and Service (12b-1) Fees 0.25% 0.65% 0.50% 0.00% 0.00%
Other Expenses (as a percentage of Assets): 0.20% 0.20% 0.20% 0.10% 0.20%
Acquired Fund Fees and Expenses 0.01% 0.01% 0.01% 0.01% 0.01%
Expenses (as a percentage of Assets) [1] 0.81% 1.21% 1.06% 0.46% 0.56%
Fee Waiver or Reimbursement [2] (0.08%) (0.08%) (0.08%) (0.08%) (0.08%)
Net Expenses (as a percentage of Assets) 0.73% 1.13% 0.98% 0.38% 0.48%
Fee Waiver or Reimbursement over Assets, Date of Termination August 31, 2027 August 31, 2027 August 31, 2027 August 31, 2027 August 31, 2027
[1] Total annual Fund operating expenses differ from the ratio of expenses to average net assets shown in the Financial Highlights, which reflect the operating expenses of the Fund and do not include acquired fund fees and expenses.
[2] The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses, interest expense and certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.47% for each share class except Class R6 and 0.37% for Class R6. The investment manager has also agreed to reduce its fees to reflect reduced services resulting from the Fund’s investments in Franklin Templeton affiliated funds. In addition, transfer agency fees on Class R6 shares of the Fund have been capped so that transfer agency fees for that class do not exceed 0.03%. These contractual arrangements are expected to continue until August 31, 2027. During the terms, the fee waiver and expense reimbursement agreements may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of termination dates or to lower the waiver and expense limitation (which would result in lower fees for shareholders).
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This 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 $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - FRANKLIN CORE PLUS BOND FUND - USD ($)
CLASS A
CLASS C
CLASS R
Class R6
ADVISOR CLASS
Expense Example, with Redemption, 1 Year $ 447 $ 215 $ 100 $ 39 $ 49
Expense Example, with Redemption, 3 Years 616 376 329 139 171
Expense Example, with Redemption, 5 Years 800 657 576 249 304
Expense Example, with Redemption, 10 Years $ 1,332 $ 1,347 $ 1,285 $ 570 $ 693
Expense Example, No Redemption, By Year, Caption [Text] If you do not sell your shares:
Expense Example, No Redemption [Table]
Expense Example, No Redemption - FRANKLIN CORE PLUS BOND FUND
CLASS C
USD ($)
Expense Example, No Redemption, 1 Year $ 115
Expense Example, No Redemption, 3 Years 376
Expense Example, No Redemption, 5 Years 657
Expense Example, No Redemption, 10 Years $ 1,347
Portfolio Turnover [Heading] Portfolio Turnover
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 349.54% of the average value of its portfolio. If mortgage dollar roll transactions had been excluded, the Fund's portfolio turnover rate for the most recent fiscal year would have been 156.76% of the average value of its portfolio.
Portfolio Turnover, Rate 349.54%